CN210405256U - Instant-on adjustable time-delay circuit - Google Patents
Instant-on adjustable time-delay circuit Download PDFInfo
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- CN210405256U CN210405256U CN201921357404.0U CN201921357404U CN210405256U CN 210405256 U CN210405256 U CN 210405256U CN 201921357404 U CN201921357404 U CN 201921357404U CN 210405256 U CN210405256 U CN 210405256U
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Abstract
An adjustable delay circuit of instantaneous on-off, the first resistance R1 and the second resistance R2 are both connected with an input voltage signal Vi, the other end of the first resistance R1 is connected with the anode of the first capacitance E1, the cathode of a voltage regulator tube Z1, the cathode of the first capacitance E1 is connected with one end of a second capacitance C1, the emitter of a first triode T1, one end of a third resistance R3, the emitter of a second triode T2 and the ground GND of a power supply, the other end of the second capacitance C1 is connected with the anode of a voltage regulator tube Z1 and the base of a first triode T1, the other end of a second resistance R2 is connected with the collector of the first triode T1, the other end of the third resistance R3 and the base of a second triode T2, the circuit has the advantages that when the input voltage signal Vi is high level, the output voltage signal Vo is instantaneously connected with the GND, the circuit is automatically off after delay, and the delay time is shorter than that the adjustable electronic component used by the utility model, the cost is lower, can realize the circuit of instantaneous expert, adjustable time delay outage function.
Description
Technical Field
The utility model relates to the technical field of circuits, more specifically say, especially, relate to an instantaneously lead to adjustable time delay broken circuit.
Background
The delay circuit is used as a key circuit in signal processing, is widely applied to occasions such as frequency conversion control, automatic measurement and control, phase-controlled radar, electronic countermeasure and the like, and generally needs the delay circuit to generate delay signals with different delay times in the process of controlling or testing a switching power supply system.
In the existing life, the delay control circuit is complex in structure, multiple in used electronic components, complex in operation in the using process, single in function, high in cost, and some delay circuits are not humanized and complex in connection.
SUMMERY OF THE UTILITY MODEL
The utility model discloses improve prior art to above-mentioned shortcoming, provide an instantaneously lead to adjustable time delay broken circuit, technical scheme as follows:
an instant on adjustable time delay circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a voltage regulator tube Z1, a first capacitor E1, a second capacitor C1, a first triode T1 and a second triode T2; the other end of the first resistor R1 and the second resistor R2 are both connected with an input voltage signal Vi, the other end of the first resistor R1 is connected with the anode of the first capacitor E1 and the cathode of the regulator tube Z1, the cathode of the first capacitor E1 is connected with one end of the second capacitor C1, the emitter of the first triode T1, one end of the third resistor R3, the emitter of the second triode T2 and the ground GND, the other end of the second capacitor C1 is connected with the anode of the regulator tube Z1 and the base of the first triode T1, the other end of the second resistor R2 is connected with the collector of the first triode T1, the other end of the third resistor R3 and the base of the second triode T2, and the collector of the second triode T2 is connected with an output voltage signal Vo.
The first capacitor E1 is an electrolytic capacitor.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses circuit structure is simple, reliable, stable, and the cost is lower, and used electronic components is less, and safe and reliable, can realize the circuit of instantaneous logical, adjustable time delay outage function, and this circuit has when input voltage signal Vi is the high level, and the instantaneous output voltage signal Vo that makes switches on with power ground GND, automatic disconnection again after the time delay, and the time delay is adjustable.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described as follows:
fig. 1 is a schematic structural view of the present invention;
Detailed Description
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Embodiments of the present invention will be described in further detail below with reference to the following drawings, in which:
as shown in fig. 1, the instant-on adjustable delay-off circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a voltage regulator tube Z1, a first capacitor E1, a second capacitor C1, a first triode T1, and a second triode T2; the other end of the first resistor R1 and the other end of the second resistor R2 are connected with an input voltage signal Vi, the other end of the first resistor R1 is connected with the anode of the first capacitor E1 and the cathode of the voltage regulator tube Z1, the cathode of the first capacitor E1 is connected with one end of the second capacitor C1, the emitter of the first triode T1, one end of the third resistor R3, the emitter of the second triode T2 and the ground GND of the power supply, the other end of the second capacitor C1 is connected with the anode of the voltage regulator tube Z1 and the base of the first triode T1, the other end of the second resistor R2 is connected with the collector of the first triode T1, the other end of the third resistor R3 and the base of the second triode T2, and the collector of the second triode T2 is connected with the output voltage signal Vo.
Further, the first capacitor E1 is an electrolytic capacitor.
The working principle is taken as an example in combination with the structure, and the description is made in combination with the attached drawing 1: when the input voltage signal Vi is at a low level, the base of the second triode T2 is also at a low level, the collector and emitter of the second triode T2 are in a cut-off state, that is, the output voltage signal Vo is not conducted with the power ground GND, when the input voltage signal Vi is at a high level, the base voltage Vbe of the second triode T2 is higher than the transistor turn-on voltage through the voltage division of the second resistor R2 and the third resistor R3, so that the collector and emitter of the triode are conducted, that is, the output voltage signal Vo is conducted with the power ground GND, and when the input voltage signal Vi is at a high level, the first capacitor E1 is charged through the first resistor R1, at this time, the positive voltage of the first capacitor E1 is gradually increased along with the charging time, and when the voltage is higher than the breakdown voltage of the regulator tube Z1, the base voltage Vbe of the positive voltage of the first triode T1 of the regulator tube Z1 is also gradually increased from the low level, when the base voltage Vbe is higher than the transistor turn-on voltage, the collector and the emitter of the transistor are turned on, that is, the base of the second transistor T2 is turned on with the power ground GND, the base voltage Vbe of the second transistor T2 is changed from the high level to the low level, so that the collector and the emitter of the second transistor T2 are turned from on to off, that is, the output voltage signal Vo is turned from on to off with the power ground GND, thereby implementing the function of the circuit.
The delay time of the delay-and-break circuit can be adjusted by changing the resistance value of the first resistor R1 or the capacitance value of the first capacitor E1.
The utility model discloses simply, reliably, stable through adopting discrete device, realizes that this circuit when control signal is the high level, the instantaneous output that makes truns into to switch on and keep by the disconnection, automatic disconnection after time delay, and the material low cost of circuit, reliable and stable, can effectively reduce product cost and production man-hour.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. An adjustable time delay broken circuit of instantaneous expert, its characterized in that: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a voltage regulator tube Z1, a first capacitor E1, a second capacitor C1, a first triode T1 and a second triode T2; the other end of the first resistor R1 and the second resistor R2 are both connected with an input voltage signal Vi, the other end of the first resistor R1 is connected with the anode of the first capacitor E1 and the cathode of the regulator tube Z1, the cathode of the first capacitor E1 is connected with one end of the second capacitor C1, the emitter of the first triode T1, one end of the third resistor R3, the emitter of the second triode T2 and the ground GND, the other end of the second capacitor C1 is connected with the anode of the regulator tube Z1 and the base of the first triode T1, the other end of the second resistor R2 is connected with the collector of the first triode T1, the other end of the third resistor R3 and the base of the second triode T2, and the collector of the second triode T2 is connected with an output voltage signal Vo.
2. The instant-on adjustable delay-and-break circuit of claim 1, wherein: the first capacitor E1 is an electrolytic capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357404.0U CN210405256U (en) | 2019-08-20 | 2019-08-20 | Instant-on adjustable time-delay circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357404.0U CN210405256U (en) | 2019-08-20 | 2019-08-20 | Instant-on adjustable time-delay circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210405256U true CN210405256U (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921357404.0U Active CN210405256U (en) | 2019-08-20 | 2019-08-20 | Instant-on adjustable time-delay circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210405256U (en) |
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2019
- 2019-08-20 CN CN201921357404.0U patent/CN210405256U/en active Active
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