CN2084692U - Full automatic integrated circuit small tv difference frequency relay - Google Patents
Full automatic integrated circuit small tv difference frequency relay Download PDFInfo
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- CN2084692U CN2084692U CN 90215709 CN90215709U CN2084692U CN 2084692 U CN2084692 U CN 2084692U CN 90215709 CN90215709 CN 90215709 CN 90215709 U CN90215709 U CN 90215709U CN 2084692 U CN2084692 U CN 2084692U
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Abstract
The utility model relates to a small full-automatic integrated circuit TV translator. The small TV translator for a full-automatic integrated circuit of the utility model is composed of a high-frequency head, an intermediate-frequency amplifying circuit, an automatic gain control circuit, an upper frequency converting circuit, a power amplifying circuit, a power supply circuit, a cabinet, a microampere testing meter, radiation fins, etc. The utility model has the characteristics of high sensitivity, low noise, strong interference resistance, easy debugging, dual purposes for alternating current and direct current, small volume, light weight, long life time, etc.; the strength of input and output signals can be displayed, the utility model can be automatically turned on and turned off, and the voltage of a power supply is 150 to 250V. The cost of the utility model is only about one tenth of the cost of other TV translators of the same power and the same type, and therefore, the utility model is quite suitable for remote mountain areas and poor areas.
Description
The utility model is a kind of full-automatic integrated circuit micro television transposer.
Existing various micro television transposer, because circuit design is rationally little and the employing discrete component, complex structure not only, the debugging trouble, and condition harshness, be that received signal is eager to excel, it is steady that input voltage is wanted, and makes that in use often the appearance image is unintelligible, and the distortion factor is big, noise jamming severity, problems such as fault is frequent have seriously influenced and have watched effect, particularly cost an arm and a leg, for those poverty-stricken areas and relatively the people of scattered settlement in the corner, mountain village be difficult to bear, thereby influenced the raising of TV popularity rate.
The purpose of this utility model is to provide a kind of modern design, rational in infrastructure, debugging simple (only using a universal instrument), high sensitivity, low noise, power supply can change in 150v～250v scope, AC/DC, and has a strong and weak test function of signal, fault diagnosis functions, full-automatic switch machine function, easy to maintenance, durable in use, cost only for existing with other transposer about 1/10th of power, be well suited for the widely used full-automatic integrated circuit micro television transposer in outlying mountain area and poverty-stricken area.
Technical solution of the present utility model is: full-automatic integrated circuit micro television transposer, has tuner, intermediate frequency amplifier circuit, automatic gain control circuit, up-converter circuit, power amplification circuit, power circuit, casing, compositions such as fin microampere test chart, its special character is in the said intermediate frequency amplifier circuit, be provided with IC1 broadband pre-amplification circuit, IC2 broadband intermediate level circuit and AGC amplifying circuit, said automatic gain control circuit is made up of IC2 and IC3, in the said up-converter circuit, be provided with local oscillation circuit and mixting circuit, local oscillation circuit has adopted two triode BG1 and BG2, be provided with in the mixting circuit by R6, the intermediate frequency attenuator circuit that R39 formed, and by L14, L15, the low-pass filter circuit that C50 formed and by L17, L18, the output tuning circuit that C58 formed, said power amplification circuit, three triode BG5 have been adopted, BG6 and BG7, at BG5, the base stage of BG6 is in series with L32 respectively, L29, collector electrode at BG5 is provided with by L31, L33, the broadband impedance matching circuit that C92 formed, collector electrode at BG6 is provided with by L34, the tuning circuit that C85 composes in parallel and by L28, C86, series resonant circuit and impedance matching circuit that C87 forms, in the base circuit of BG7, be provided with by D12, D13 series connection back is in parallel with C78, the biasing voltage stabilizing circuit of connecting with R54 again, collector electrode at BG7 is provided with by L24, L35, L36, C76, C77, C70, impedance matching circuit that C71 formed and resonant circuit, said power circuit has adopted by IC5, IC6, IC4, the voltage stabilizing circuit of being formed.
The two ends of L7 are connected on respectively on the pin 4 and pin 5 of IC2 in the IC2 broadband intermediate frequency amplifier circuit in the utility model technical solution, the two ends of L6 are connected on respectively on the pin 12, pin 13 of IC2, and pin 9 and C13, C14, R8, the R9 of IC2 are connected to form height and put the AGC delay circuit.
In the up-converter circuit in the utility model technical solution, the collector electrode of BG2 seals in L11 earlier, links to each other with L12, C49 simultaneously then, and the two ends of C58 link to each other with the collector electrode of BG3, BG4 by R44, R46 respectively.
In the agc circuit in the utility model technical solution, the pin 16 of IC3 links to each other with C19, R11 simultaneously, and the pin 8 of IC3 links to each other with electrolytic capacitor C27, R17, R10 simultaneously.
In the power circuit in the utility model technical solution, between the base stage of BG8 and the contact and be connected with C30, C31, the emitter of BG8 is connected with the pin of IC4 2, is connected to C29 between its tie point and the earth point, is set side by side with C102, C103 between the base stage of BG13 and the earth point.
The anode of the microampere test chart in the utility model technical solution is provided with change over switch K2, and the pin 1 of K2 is in series with R18, pin 2 is in series with R51.
In the power circuit in the utility model technical solution, the positive pole of D2 links to each other with the pin 1 of IC4 through R13, the anode of D9 links to each other with the anode of C101 through R64, the anode of D6 links to each other with the anode of C64 through R29, and the pin 2 of IC4 connects the emitter of BG8, and pin 1 links to each other with L10, the pin 1 of IC6 links to each other with the emitter of BG13, pin 2 links to each other with L22, and the pin 1 of IC5 links to each other with the anode of C110, and pin 2 links to each other with the collector electrode of BG13.
The middle part of the panel 13 in the utility model technical solution is provided with microampere test chart 14, a panel left side is surveyed top and is provided with three luminous indications 7 side by side, left side central portion is provided with three functional switches 16, the bottom, left side is provided with high frequency accessory power outlet 15, the right upper portion of panel 13 is provided with channel switcher 9 and inching switch 10, and lower right side is provided with high frequency input socket 12 and external direct current power supply jack 11 side by side.
Fin 20 in the utility model technical solution is the angle steel shape, be fixed with integrated package of pressure-stabilizing 19 on one side, be connected then on the printed circuit board (PCB) 4, another side is connected on the chassis backplane, fin 2 is rectangular-shaped, be fixed with triode 3 on one side, be connected then on the printed panel 4, another side links to each other with the back plate 5 of casing.
Full-automatic integrated circuit micro television transposer of the present utility model has the following advantages:
1, sensitive height under the situation a little less than the received signal, also can be launched television signal with high quality;
2, antijamming capability is strong, image stability, and the distortion factor is very little;
3, power requirement is not high, can in the 150V-250V scope, change, and the energy AC/DC;
4, debugging is very simple, need not special equipment, only just can deal with problems with a universal instrument.
5, easy to install, the microampere test chart both can be used to test the power of received signal, can show the size of power output again;
6, luminous indication can be diagnosed out the happening part of fault;
7, realized the full-automation of switching on and shutting down, when received signal was arranged, it can be opened automatically and carry out work, and during signal ended, it can shut down again automatically;
8, perfect heat-dissipating need not any cooling measure, can guarantee long steady operation.
9, volume is little, and is in light weight, simple in structure, and cost is low, and power is that the cost of 1W is about 200 yuan;
10, the life-span is long, durable in use;
Description of drawings and use-case:
Fig. 1 is the circuit diagram of the full-automatic integrated circuit micro television of the utility model transposer, and Fig. 2 is the profile of the full-automatic integrated circuit micro television of the utility model transposer and the schematic diagram of fin installation site.
Embodiment as shown in the figure, circuit structure as shown in Figure 1, by the VHF tuner, in put put in input filter, the preposition broadband of IC1 with IC2 broadband master in put, automatic gain control AGC voltage amplification, the detection of IC3AGC voltage, up-converter circuit, transmitting channel filter, power amplifying circuit, automatic switch machine circuit, the circuit of waiting, voltage-stabilized power supply circuit and indicating circuit etc. form.The VHF tuner adopts market product, its high frequency input terminal 1 links to each other (as shown in Figure 2) with the high frequency input socket 12 of machine shell panel 13 by 75 Ω coaxial wires, its medium frequency output end 2 by 75 Ω coaxial wires with in put input R1, C4, C5, the R2 connecting place is connected, its power supply leading-in end 3 is connected with the tie point of C1, C2, L4, and its height is put 4 of AGC voltage leading-in ends and is connected with C3, R3, R5 tie point.In put input filter and form by R1, R2, C4, C5, C6, C7, L1, L2, L3, C9, wherein C4, R2, C6, L1 constitute the absorption circuit that receives contiguous high channel pix carrier, C5, R2, C7, L2 constitute contiguous low channel sound accompaniment absorption circuit.Put input matching circuit in being made up of R1, R2, L3, C9, an end of putting input filter in this is connected with the tuner output cable by the non-earth terminal of R1, the other end then with by C9 with in put preamplifier IC 1 input 1 link to each other.
Put by IC1, C11, D1, C10, R4 during IC1 is preposition and formed, wherein the end of R4 links to each other with the A point, after linking to each other, other end filter circuit of pressure-stabilizing first and that D1, C10 are formed directly is connected into the power input 2 of IC1 again, the earth terminal 4 of IC1 links to each other with common ground point, and output links to each other with the end of C11.Main intermediate level circuit is made up of IC2, L5, L6, C12, L7, C15, L10, C16, C17, and wherein the two ends of L5 link to each other with pin 1, the pin 14 of IC2 respectively, and the pin 2 of IC2, pin 3, pin 5 are connected with the A point after linking to each other.Pin 4 links to each other with IC3 pin 1 by C20, links to each other with pin 5 by L7 again, also links to each other with L14 by R6.Anode by C17 after C15, C16, the parallel connection of C17 two ends links to each other with the A point.The pin 13 of IC2 links to each other with pin 12 by L6, and the end of C12 is connected with the B point, and the other end links to each other with pin 12.The pin 7 of IC2 links to each other with common ground point B.
Automatic gain control (AGC) voltage amplifier circuit is by IC2, C3, R3, R5, C14, C13R8, R9, C18, R7 forms, wherein the pin 11 of IC2 is through with after R5 connects, be connected with the leading-in end 4 of tuner again, C3, after the R3 parallel connection, 4 ends that connect tuner, the other end links to each other with the B point, pin 9 and the C13 of IC2, C14, R8, the R9 points of common connection links to each other, C14, the other end of R9 links to each other with the A point, C13, the other end of R8 links to each other with the B point, pin 8 and the C18 of IC2, the end of R10 links to each other simultaneously, and another termination B point of C18 links to each other with the A point after the pin 6 of IC2 and the R7 series connection again.
AGC voltage detecting circuit is by IC3, C19, L10, C21, C22, R10, R12, R11R15, R16, C26, R14, L9, C24, C23, L8, C20, C25, C27 forms, the pin 16 of IC3 links to each other with the end of C19, the other end of C19 links to each other with the B point, pin 16 links to each other with pin 12 with R11 series connection back, pin 11 links to each other with the C point, link to each other with the C point again after pin 9 and the R12 series connection, pin 8 links to each other with the anode of C27, the negative terminal of C27 links to each other with B, link to each other with the pin 8 of IC1 again after pin 8 and the R10 series connection, simultaneously pin 8 links to each other with the end of C28 with R17 series connection back, and the other end of C28 links to each other with ground, pin 6 be communicated with pin 5 again after R15 connects.An end links to each other with pin 6 after R16, the C26 parallel connection, and the other end links to each other with the B point.Pin 4 and C25 series connection back links to each other with pin 3, and an end links to each other with pin 3 after L9, the R14 parallel connection, links to each other with the A point after the other end and the L8 series connection, and an end is continuous with the public point that links to each other of L8, L9, R14 after C23 and the C24 parallel connection, and the other end links to each other with the B point.
Up-converter circuit is made up of BG1, BG2, BG3, BG4, wherein forms capacitance three-point type by BG1, C40, C41, L10, C42, R31, R32, C44, C43, R33, R34.
The oscillating voltage circuit of local-oscillator circuit is input to the BG2 base stage by the BG1 emitter through C45 and carries out the local oscillator voltage amplification.
The local oscillator amplifying circuit is made up of BG2, R35, R36, R37, R38, C46, C47, C48, L11, L12, C49, L13, wherein the BG2 collector electrode links to each other with the D point with L11, L12 series connection back, the BG2 collector electrode is connected with C49 earlier with after L11 connects again, and links to each other with the B point through R38.
Mixing intermediate frequency input circuit is made up of the elementary institute of R6, L14, C50, L15, R39, B1, the end of R6 links to each other with IC2 pin 4, the other end is connected successively with L14, L15, C51, R39, the other end of R39 links to each other with the B point, L14 a little linked to each other with the end of C50 with linking to each other of L15, the other end of C50 links to each other with B, and L13 is arranged between D point and the E point, and the elementary and R39 of B1 is in parallel.Mixting circuit and emission filter circuit, by the elementary R40 of B1, R41, C52, C53, R42, R43, C54C55, BG3, BG4, R44, R45, R46, C56, C57, C58, L16, L17, L18, L19, C51, C98, C97, C59, C60 forms, L17 wherein, the end of L18 links to each other with the E point after linking to each other, its other end links to each other with the two ends of C58 respectively, the tie point of C58 and L18 and the inter-collector of BG4 have sealed in R46, C54, each end of C55 respectively with BG3, the base stage of BG4 links to each other, the other end then connects together and R38 again, the continuous point of C49 links to each other, the other end of R38 links to each other with the B point, the other end of C49 then with L11, the continuous point of L12 links to each other.The end of C61 links to each other with ground, links to each other with the end of C98 after the other end and the L19 series connection again, and the other end of C98 then links to each other with the B point.The two ends of L16 link to each other with the E point with the F point respectively.
Power amplification circuit divides preposition amplification again, the middle amplification, and the last utmost point amplifies three parts, is wherein formed the broadband integrated amplifier by BG5, R62, R63, L32, L30, L31, L33, C96, R61, C95.Wherein the base stage of BG5 inserts linking to each other a little of R63, R62 earlier with after the L32 series connection again, the other end of R63 then links to each other with the B point, the other end of R62 links to each other with the F point, the BG5 collector electrode is earlier with after L31 connects, link to each other with the end of L33 again, the other end of L33 links to each other with the F point, and the end of L30 links to each other with the F point, and the other end links to each other with the G point.Form intermediate power amplifier by BG6, L23, L34, L28, L29, C86, C87, C88, C89, IC6, L22, C83, C99, C90, C91, C92, R58, R59, R60, C85, wherein the base stage of BG6 is connected with L29 earlier, company's point with R60 and C92 is connected then, the other end of R60 links to each other with the B point, and the other end of C92 then links to each other with the tie point of L31 and L33.The collector electrode of BG6 is connected with the tie point of L34, L28, C85, and the other end of L34 links to each other with the G point, and the other end of L28 has been gone here and there C86, C87 successively, and the other end of C87C85 and B point join.C86 links to each other with C87 and o'clock links to each other with an end of 75 Ω coaxial cable H stamen lines, and the other end of coaxial cable stamen line then links to each other with the tie point of C82 and L27.1 end of IC6 links to each other with the N point, and 3 ends link to each other with the B point, and the output 2 of IC6 links to each other with the G point successively with after L22, the L23 series connection again, and at IC6 and L22, L22 links to each other with L23 and a little connects C83, C99 respectively, and the other end of C83C99 links to each other with the B point.The level power amplification circuit is not by BG7, C71, C70, L35L36, C76, C77, L24, R56, R57, C79, C80, C81, C82, L26, L27L25, C84, R55, C78, D12, D13, R54, C100, L21, R53, R52, C75L20, C74, C73, C72 forms, the wherein base stage of BG7 and L25, R55, the common tie point of L26 links to each other, the other end of L26 then links to each other with the common tie point of C81 and C82, the other end of C81 then links to each other with the B point, the other end of C82 then links to each other with the points of common connection of H stamen line and L27, L25 wherein, an end links to each other with the BG7 base stage after the R55 parallel connection, the other end then links to each other with the N point earlier with after the R54 series connection again, D12, D13 series connection back one end ground connection, the other end links to each other with the anode of the C78 of an end ground connection, the collector electrode of BG7 is connected to L24, L24 while and C72, C73, the C74 parallel connection, its common tie point links to each other with the M point, the other end of three electric capacity links to each other with the B point, simultaneously the collector electrode of BG7 successively with L35, L36, C70, the C71 series connection, the end of C76 links to each other with the intermediate connection point of L35 and L36, the other end is connected with the B point, one of C69 terminates at C70, the tie point of C71, the other end and D11, the points of common connection of R5 connects, the other end of D11 links to each other with the B point, the other end of R51 links to each other with the P point, C70, the tie point of C71 links to each other with an end of 75 Ω coaxial cable stamen lines again, and the other end of stamen line links to each other with high frequency accessory power outlet stamen 15 on the casing.
Automatic switching circuit is by R19, R20, C31, K1, R21, BG10, C32, D5, C33C34, D3, D4, R30, C37, R26, R27, R28, R24, R23, BG9, C35.R22C31, C30, BG8, C29, D10, C105, BG14, C104, R66, R65, BG13, C103, C102, C101 forms, wherein link to each other with the pin 2 of IC5 again after the emitter of BG10 and the R28 series connection, an end links to each other with the emitter of BG10 after D5 and the C33 parallel connection, the other end is connected with the B point, the emitter while of BG8 and the pin 2 of IC4, the anode of C29 links to each other, the negative terminal of C29 is connected with the B point, the base stage of BG8 links to each other with the collector electrode of BG9 by R22, after C30 and the C31 parallel connection, one end ground connection, the base stage of another termination BG8.The base stage of BG13 links to each other with the collector electrode of BG14 by R65, and C102 and C103 are connected in parallel between the base stage of earth point and BG13, and the emitter of BG13 links to each other with IC6 pin 1, and C100 and C101 are connected in parallel between B point and the IC6 pin 1.
The circuit of waiting is made up of BG11, R47, C62, R49, D7, R48, C66, C67, BG12, C65, R50, D8, R25, and the pin 1 of K1 links to each other with the B point, links to each other with the collector electrode of BG10 after pin 2 and the R21 series connection again.
Voltage-stabilized power supply circuit is made up of IC5, IC4, IC6, and wherein the input 1 of IC5 links to each other with the anode of C110, i.e. rectifier D12 positive voltage output end.The output 2 of IC5 links to each other with the collector electrode of BG13, BG8, and the output 1 of IC4 is connected with the C point, and input 2 links to each other with the emitter of BG8, and the input 1 of IC6 links to each other with the emitter of N point and BG13, and input 2 is connected with the tie point of L22, C83.The pin 3 of IC5, IC4, IC6 links to each other with the B point.
Indicating circuit is made up of D2, R13, D6, R29, D9, R64, C39, C38 and K2, C68, R51, D11, C69, R18, wherein be connected with the junction of C28, R17 again after K2 pin 1 and the R18 series connection, the pin 2 of K2 links to each other with the P point, and pin 3 links to each other with the anode of microampere test chart.D2 links to each other with the C point with R13 series connection back, and the other end links to each other with the B point, and D6 is connected with the pin 2 of IC5 with R29 series connection back, other end ground connection, and D9 links to each other with the N point with R64 series connection back, and the other end links to each other with the B point.
Power unit also comprises circuit such as the transformation be made up of Y1, K3, B2, C106, C107, C111, C108, C109, C110, fuse, mains switch, rectification, filtering, and by external direct current power supply jack that Z formed etc.
The profile of the full-automatic integrated circuit micro television of the utility model transposer and fin installation site are as shown in Figure 2, the base plate of casing and back plate 5 are set as a monoblock, the biside plate of casing and cover plate 8 are set as a monoblock, the back plate side plate of casing is equipped with louvre 6, the middle part of the panel 13 of casing is provided with microampere test chart 14, the panel left upper portion is provided with three luminous indications 7 side by side, left side central portion is provided with three functional switches 16, the bottom, left side is provided with high frequency accessory power outlet 15, the right upper portion of panel 13 is provided with receiving channels change over switch 9 and inching switch 10, lower right side is provided with high frequency input socket 12 and external direct current power supply jack 11 side by side, and handle 17 usefulness screws are connected on the chassis sidewall.Fin 20 is the angle steel shape, be fixed with integrated package of pressure-stabilizing 19 on one side, link to each other with printed circuit board (PCB) 4 then, another side is connected on the chassis backplane with screw 18, fin 2 is rectangular-shaped, Yi Bian be fixed with triode 13, links to each other with printed circuit board (PCB) 4 then, another side links to each other with the back plate 5 of casing with screw 1, and all electronic components of this machine all are located in the casing.
The 1C1 that the utility model embodiment is adopted is the hyperfrequency integrated circuit, and its model is μ PC1651; 1C2 is a TV intermediate frequency integrated circuit, and its model is HA1144; IC3 is a TV intermediate frequency integrated circuit, and its model is HA1167; 1C4,1C5,1C6 are 78 serial circuit of three-terminal voltage-stabilizing integrated, and its model is respectively AN7812, AN7824, AN7818 or μ A7812, μ A7824, μ A7818.But above integrated circuit also can replace with other integrated circuit of the identical direct substitution of function.
Claims (9)
1, a kind of full-automatic integrated circuit micro television transposer, has tuner, intermediate frequency amplifier circuit, automatic gain control circuit, up-converter circuit, power amplification circuit, power circuit, casing, compositions such as fin microampere test chart, it is characterized in that in the said intermediate frequency amplifier circuit, be provided with IC1 broadband pre-amplification circuit, IC2 broadband intermediate level circuit and AGC amplifying circuit, said automatic gain control circuit is made up of IC2 and IC3, in the said up-converter circuit, be provided with local oscillation circuit and mixting circuit, local oscillation circuit has adopted two triode BG1 and BG2, be provided with in the mixting circuit by R6, the intermediate frequency attenuator circuit that R39 formed, and by L14, L15, the low-pass filter circuit that C50 formed and by L17, L18, the output tuning circuit that C58 formed, said power amplification circuit, three triode BG5 have been adopted, BG6 and BG7, at BG5, the base stage of BG6 is in series with L32 respectively, L29, collector electrode at BG5 is provided with by L31, L33, the broadband impedance matching circuit that C92 formed, collector electrode at BG6 is provided with by L34, the tuning circuit that C85 composes in parallel and by L28, C86, series resonant circuit and impedance matching circuit that C87 forms, in the base circuit of BG7, be provided with by D12, D13 series connection back is in parallel with C78, the inclined to one side value voltage stabilizing circuit of connecting with R54 again, collector electrode at BG7 is provided with by L24, L35, L36, C76, C77, C70, impedance matching circuit that C71 formed and resonant circuit, said power circuit has adopted by IC5, IC6, IC4, the voltage stabilizing circuit of being formed.
2, full-automatic integrated circuit micro television transposer according to claim 1, the two ends that it is characterized in that L7 in the IC2 broadband intermediate frequency amplifier circuit are connected on respectively on the pin 4 and pin 5 of IC2, the two ends of L6 are connected on respectively on the pin 12, pin 13 of IC2, and pin 9 and C13, C14, R8, the R9 of IC2 are connected to form height and put the AGC delay circuit.
3, full-automatic integrated circuit micro television transposer according to claim 1, it is characterized in that in the up-converter circuit, the collector electrode of BG2 seals in L11 earlier, links to each other with L12, C49 simultaneously then, and the two ends of C58 link to each other with the collector electrode of BG3, BG4 by R44, R46 respectively.
4, full-automatic integrated circuit micro television transposer according to claim 1 is characterized in that in the agc circuit, and the pin 16 of IC3 links to each other with C19, R11 simultaneously, and the pin 8 of IC3 links to each other with electrolytic capacitor C27, R17, R10 simultaneously.
5, full-automatic integrated circuit micro television transposer according to claim 1, it is characterized in that in the power circuit, between the base stage of BG8 and the contact and be connected with C30, C31, the emitter of BG8 is connected with the pin of IC4 2, be connected to C29 between its tie point and the earth point, be set side by side with C102, C103 between the base stage of BG13 and the earth point.
6, full-automatic integrated circuit micro television transposer according to claim 1 is characterized in that the anode of microampere test chart is provided with change over switch K2, and the pin 1 of K2 is in series with R18, pin 2 is in series with R51.
7, full-automatic integrated circuit micro television transposer according to claim 1, it is characterized in that in the power circuit, the positive pole of D2 links to each other with the pin 1 of IC4 through R13, and the anode of D9 links to each other with the anode of C101 through R64, and the anode of D6 links to each other with the anode of C64 through R29, the pin 2 of IC4 connects the emitter of BG8, pin 1 links to each other with L10, and the pin 1 of IC6 links to each other with the emitter of BG13, and pin 2 links to each other with L22, the pin 1 of IC5 links to each other with the anode of C110, and pin 2 links to each other with the collector electrode of BG13.
8, full-automatic integrated circuit micro television transposer according to claim 1, the middle part that it is characterized in that panel 13 is provided with microampere test chart 14, a panel left side is surveyed top and is provided with three luminous indications 7 side by side, left side central portion is provided with three functional switches 16, the bottom, left side is provided with high frequency accessory power outlet 15, the right upper portion of panel 13 is provided with channel switcher 9 and inching switch 10, and lower right side is provided with high frequency input socket 12 and external direct current power supply jack 11 side by side.
9, full-automatic integrated circuit micro television transposer according to claim 1, it is characterized in that fin 20 is the angle steel shape, be fixed with integrated package of pressure-stabilizing 19 on one side, be connected then on the printed circuit board (PCB) 4, another side is connected on the chassis backplane, and fin 2 is rectangular-shaped, Yi Bian be fixed with triode 3, be connected then on the printed panel 4, another side links to each other with the back plate 5 of casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90215709 CN2084692U (en) | 1990-08-11 | 1990-08-11 | Full automatic integrated circuit small tv difference frequency relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90215709 CN2084692U (en) | 1990-08-11 | 1990-08-11 | Full automatic integrated circuit small tv difference frequency relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2084692U true CN2084692U (en) | 1991-09-11 |
Family
ID=4894955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90215709 Withdrawn CN2084692U (en) | 1990-08-11 | 1990-08-11 | Full automatic integrated circuit small tv difference frequency relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2084692U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373930C (en) * | 2005-10-27 | 2008-03-05 | 上海交通大学 | Analogue TV differential rotating machine possessing digital TV program differential rotating function |
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1990
- 1990-08-11 CN CN 90215709 patent/CN2084692U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373930C (en) * | 2005-10-27 | 2008-03-05 | 上海交通大学 | Analogue TV differential rotating machine possessing digital TV program differential rotating function |
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