JPS63294256A - Highly efficient method for obtaining dc voltage directly from ac voltage without magnetic principle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a method for obtaining DC voltage from an AC LIT. This is a highly efficient method of directly obtaining the partial current /-k from an alternating current voltage without using a rectifying electric circuit; first, when the alternating current voltage is low through a rectifying electric circuit; controlling the electric circuit to energize the ON-OFF electric circuit; and The feature is that the DC voltage is transferred directly to the output capacitor and then the DC type FIZ is obtained directly from the AC voltage.However, the low voltage DC power supply is separate from the AC type P. There's no need.

In the past, we used to obtain low-voltage DC power in several ways: (a) After applying a rectifier filter to the AC type, most of the voltage was obtained by using something like electrical resistance. (b) A transformer is used to step down the AC electricity and then perform some rectification and filtering.

The disadvantage of this method is that it uses a transformer, so it is expensive and can be costly.

(C) After rectifying AC electricity with one filter - A transistor is used as a step-down element.

The disadvantage of this method is that even if a large voltage is applied to the transistor
Let's bridge to the second note try shift.

(d) Using an integrated electrical circuit to control the 5CR (silicon control current regulator) to convert AC electricity to DC electricity. The charging time of the intermediate immersion divider is controlled by the DC output voltage. The efficiency of this method is high, but other problems occur; when the PL is turned on and the DC output voltage is still low, the SCR is Unless an unspecified protective electric circuit is added, high surge currents and high direct current voltages will be generated. The main purpose of the present invention is to provide a highly efficient method of directly obtaining DC voltage from AC voltage without using the principles of magnetism. It provides a method to directly obtain DC voltage from AC voltage without wasting low efficiency or using magnetic principles. It is simple, low cost, and advantageous for mass production. OBJECTS OF THE INVENTION 0 OBJECTS OF THE INVENTION 1 OBJECTIVES OF THE INVENTION 1 SPECIAL ART 0 FIG. 1A is a block diagram of the present invention, and FIG. 1B is a waveform diagram of the present invention. AC electricity (for example, ], OV / 60 at the inner end (12)
H2 (something like
When the FF electric circuit is closed, the direct line yHas is sent to the output end (3o) through the positive electric resistance 081 and bridged onto the capacitor; Electric circuit G4) is represented by 1
However, in reality, it is possible to use a rectifier of Yuga or more.
) or when a reverse voltage can be accepted, the rectifier electric circuit 04) can be omitted. [Qi resistance 081 &'! ,
It limits the maximum current flowing through the ON-OFF electric circuit ((2), and this current is quite small (probably 0).
．． 5A) S It is also electric 41 (to the anti-A mark) l) The maximum voltage to be applied is only a few V (probably 3V); ON-OFF electric circuit (4 is AND game 1- (
2G (D crab, J: ') Control ml Sah -AN
D day 1- (When the output of 20 is low or the line q9
1 ON-OFF electric circuit C26) when the voltage output is lower than the voltage of -r-7-r-y
(TURN-OFF) LA, ND (2Q output type 11ξ is jointly determined by the voltage levels on lines (17), (1!11) and (21), line q'7),
, Q9) and (2J) are all at high level・AN
D(20 output changes to high level L 1ON-OF
F T(t.

(a) The level of the line (21) is controlled by the comparison electric circuit (22); one giant electric resistance a second and the ON-OFF electric circuit (a)-I
The voltage bridging to the reference voltage source (3z voltage (if sent from line (34) to the comparison circuit (two)
When the voltage is higher than 3 V), the output of the comparison electric circuit (22) rises to a high level of the line (2υ), and the output of the comparison electric circuit (22) is only 0 when the voltage is 0ε and the voltage is higher than 3V. ON-OF
'rM, bridged on the F electric circuit (26), when the voltage is lower than the voltage of the reference voltage source [starts at a high level 'C'] and advances to an electrical resistance of 0 -OF
Power consumption of the F electric circuit (26) j- can be controlled.

(1)) The level at line 0 is controlled by the comparison electric circuit; once the voltage at the output end (3o) is sent from the voltage C line ○■) to the comparison electric circuit), the reference voltage source (
When the voltage is lower than 3■, it becomes S comparison electric circuit)
) will chit to a high level, so the line Q
9) The upper level becomes a high level ・fli+] Chichire consideration electric Bi source (30 determines the DC output voltage of the output circuit 0 (C) The level of line (17) is Decrease mag = -1 -Decreasing magnet
ude ) Q (controlled by Q; when the pulsed DC voltage (25) on the straight line G9 reaches its maximum value, the output of 1 Decrease Aging Magnitude Oe is at a high level, except for this, and at other times) Line q'7) is -cut Q
Level 1 and 0 level prevention and game on line Gel)
(2G line GE) Touch the ON-OFF electric circuit (26) when the pulsed DC voltage at 1 gradually increases (also AND game) (ON-OFF by 20)
If it is not possible to shut off the F electric circuit Ii'8 (26), please keep it at the above O level and wait until the output voltage at the output end (G) or the pulsed DC voltage (C) rises to near its maximum value. 1@l] must be prevented. ON -0FF electric circuit flow also causes pulsed DC voltage (■ to drop and output end (
The current is turned on only when the output voltage reaches the same level as the output voltage of the The voltage 1k when bridged to is the reference voltage source (3
Lower than the voltage on 2.■ Output voltage of the output end or reference power supply (lower than the voltage of 30 on the 1 and 0 lines G, 9 J
Only in three situations, such as when the second pulse DC current Hi (25) gradually drops, ON - OFF electric circuit (
A) is first energized 0 Figure 2 is an electric circuit diagram of the first embodiment of the present invention 0 In the non-embodiment example, SCR ■ 6) is used as an ON-OFF electric circuit and pulsed direct current on line 09 is the electrical resistance i4U (4
Send the voltage divider composed in 2) to the transistor L.
5! The voltage bridged across the contact surface is dropped and once the pulsed DC voltage (c) rises gradually, the voltage on the diode (44) shuts off. The voltage drop is caused by the transistor (52
) becomes lower than the counter electrode voltage; when the 1-pulse DC voltage (a) rises to its maximum value and then begins to fall, the diode (capacity) is lower than the current. Stops flow in the opposite direction - The capacitor has an electrical resistance of 60
1 transistor (52
The rate of fall of the base electrode voltage of 1 is slower than the counter electrode voltage, which causes the transistor (52 is energized/electrical resistance 1
50 is used to limit the base current of the transistor (52).When the pulsed DC current IfC25) increases, the transistor (521) shuts down.The base voltage of the transistor (521) is also affected by the voltage drop of the diode (44). However, when the pulse DC voltage (25) gradually drops, one transistor (52) is energized for the first time. The elements surrounded by are the functions of Decrease Magnitude.

The diode (54) charges the capacitor (56) and provides power to the transistor (58); as the pulsed DC voltage (25) gradually drops, the transistor (
When 5 forces are energized, 1 transistor (5→also, accordingly, Runsister (581) is energized and capacitor (!
The voltage bridging to ``i6)'' is (the highest value of [111, pulsed DC voltage)], is sent to the cathode of the Zener diode (72) via the electrical resistance (70), and is further connected to the SC rectifier (by the diode C74). If the transistor (66) shuts down at this time, the Zener diode (72) will break down and the abdominal pressure will be transmitted to the gate of the output end (i). i:,
The voltage drop at the gate of the SC rectifier (26) is also higher than the sum of the voltage drop and the SC rectifier (26) is energized;
Among them, the timing at which the SC rectifier (26) is excited is when the pulse current voltage) gradually drops.■ The output end (a)
The output voltage of the Zener diode (72) must be lower than the reference voltage generated by the Zener diode (72) (regarding the voltage drop of 1nj). When the level of the pulsed DC current IJi (25) on 051 is higher than the voltage at the output end (30) by a predetermined value, the transistor (66) is energized, but at its predetermined value (probably 3V). is determined by the selected Zener diode M; the diode +64) prevents the reverse current from flowing through the base of the transistor (6G).The electrical resistance (60) limits the iII direction current.The electrical resistance Transistor 0 (6G) cooperates with transistor (6G) to keep both transistor 1 and transistor (66) shut.
When energized, the gate voltage of the SC rectifier 06) and the output voltage at the output end are approximately equal, so the gate of the SC rectifier (26) can be prevented from being biased in the positive direction and excited. The Zener diode (72) can be used to limit the voltage added to the maximum voltage of the SC rectifier (6) gate. The Zener diode (72) is once the breakdown voltage of the Zener diode (72), the output voltage of the output end (O), the gate voltage Lk1 of the SC rectifier) and the voltage drop of the diode (7), etc. When low...
The SC rectifier (26) is an excited 0 diode (74)
can prevent the reverse current from flowing through the gate of the SC rectifier (2.
The electrical resistor (75) assists in shutting off the SC rectifier (26) and directs the breakdown voltage of the SC rectifier (20); the capacitor (28) is the output capacitor and
When the SC rectifier) shuts off, the output end (g)
Figure 3 is an air mixture circuit diagram of the second embodiment of the present invention, in which a transistor (a lamp is used as an ON-OFF electric circuit, and a full-durage rectifier (4a)) is used. The diode (80) prevents the base of the transistor (82) from conducting in the opposite direction, and the diode (90) is the base pole of the transistor (26) or in the opposite direction;
2) The shutting speed of the transistor (20) is accelerated by increasing the electrical resistance (9). Once the Zener diode (76) is energized, the current flows through the transistor (82). The breakdown voltage of the Zener diode (76), the voltage drop of the diode (80), and the electrical resistance ( 78) If the voltage drop above and the base voltage on both sides of the transistor (82) are higher than the sum of the four, one transistor (82) is energized, and once the transistor (81) is energized,・Transistor (26
) Transistor (26) shuts down when the voltage drop that bridges over 1 meter between bases and contacts becomes low. When transistor (82) cuts, Zener diode (88) reduces the maximum output of output end (30). The level is determined and the Zener diode (to) controls the transistor (26) in this way.The base voltage of the transistor (26) must be higher than its counter electrode voltage for tI to occur. Zener diode (88
) limits the maximum value of the base voltage.The electrical resistance (8G) provides the base current required to energize the transistor (26).The electrical resistance (78) limits the maximum value of the base voltage.
2) Limit the maximum base current of the plane transistor 〇 & limits the maximum current flowing to the transistor (2Φ); the capacitor (2g) outputs the output end (30) when the transistor (26) is shut off. The present invention maintains voltage stability.To summarize the above, the present invention is highly efficient, suitable for practical use, simple in structure, easy to implement, and completely meets the requirements for applying for an invention patent. Since the invention is outdated, submit an application according to the law.

[Brief explanation of drawings]

Claims (1)

[Claims] 1. A highly efficient method for directly obtaining a DC voltage from an AC voltage without using magnetic principles, which first rectifies the AC voltage into a pulsed DC voltage via a rectifying electric circuit; When the pulsed DC voltage is equal to the output voltage or the output voltage is lower than a set value, the electric circuit is controlled to energize the ON-OFF electric circuit, and the pulsed DC voltage is sent to the output capacitor, thereby directly converting the DC voltage from the AC voltage. Its feature is that it can obtain voltage. 2. In the method described in claim 1, the control electric circuit includes a comparison electric circuit, and the input of the comparison electric circuit is coupled directly to the output end, so that the output end is connected to the output end. Its feature is that it can determine whether the voltage is lower than the reference voltage. 3. In the method described in claim 2, when the comparator measures that the voltage at the output end is lower than the reference voltage, it instructs the control electric circuit to turn ON-O.
Its feature is that the FF electric circuit is driven to enter an inductive state. 4. In the method as stated in claim 1, in which when the voltage bridged on the ON-OFF electric circuit becomes lower than a set value, the control electric circuit is turned ON-OFF.
Its characteristic is that it allows an OFF electric circuit to be energized. 5. The method as set forth in claim 1, characterized in that the ON-OFF electric circuit includes a silicon-controlled rectifier or other gate current source having a similar function. 6. In the method as mentioned in claim 5, there is also provided a decreasing magnet, thereby measuring the drop portion of the pulsed DC voltage, and the pulsed DC voltage gradually increases. Its characteristic is that it generates a single descent slope signal when descending. 7. A method as set forth in claim 6, characterized in that the control electrical circuit drives a falling slope signal to be energized. 8. A method as described in claim 1, characterized in that the pulsed direct current is basically a wave that does not pass through filtration. 9. Concerning a highly efficient method of directly obtaining DC voltage from AC voltage without using magnetic principles, it measures the voltage bridging on an ON-OFF electric circuit with one reference electric circuit; When it is zero, turn on the control electric circuit.
- OFF The characteristic is that the electric circuit is activated to be energized, thereby sending an alternating voltage to the output end. 10. In a manner as set forth in claim 1, in which the ON-OFF electrical circuit, when closed, provides a path of relatively low impedance between the input end and the output end. Features.