CN201043992Y - Test circuit for relay response time - Google Patents
Test circuit for relay response time Download PDFInfo
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- CN201043992Y CN201043992Y CNU2007200228634U CN200720022863U CN201043992Y CN 201043992 Y CN201043992 Y CN 201043992Y CN U2007200228634 U CNU2007200228634 U CN U2007200228634U CN 200720022863 U CN200720022863 U CN 200720022863U CN 201043992 Y CN201043992 Y CN 201043992Y
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Abstract
A circuit for testing the relay operating time belongs to the electronic component testing circuit. The utility model comprises an oscillator which consists of a crystal oscillator JZ, a gate G1, a gate G2, a resistance R1, a resistance R2, a capacitance C1 and a capacitance C2; the gates G3 and G4 form an output end, and a DC power is separately connected with the input ends of the gates G1, G2 by the resistances R5, R3 and R4 to supply power for the oscillator. The utility model can provide a circuit for testing the relay operating time whose structure is simple, price is low and practicality is strong. The utility model is characterized by rational design and convenient use.
Description
(1) technical field
The test circuit that the utility model relates to a kind of relay-operating time belongs to electron device testing circuit class.
(2) background technology
At present the automatic fire fighting control system in the construction work by Fire Autoalarm to such as: non-fire-fighting power supplies of cut-outs such as fire extinguishing pump, spray pump, fire accident broadcast, elevator, rolling screen door, extinction using gas pipe network, air conditioner, anti-fume extractor, connect the fire failure illumination and carry out automatic/hand and control, above-mentioned control is light current control forceful electric power, so need to adopt a large amount of relays to be used to realize above requirement.
When fire took place, the dependent instruction of Fire Autoalarm sent, and the relay at corresponding interlock position adhesive rapidly just seems particularly important so that interlocking equipment starts.So the test to relay-operating time is an important indicator of check relay quality.
(3) summary of the invention
The utility model purpose is the test circuit that obtains a kind of simple in structure, cheap, practical relay-operating time.
The test circuit of a kind of relay-operating time, it is characterized in that it is to constitute oscillator by crystal oscillator JZ, door G1, G2, resistance R 1, R2, capacitor C 1, C2, form output circuit by door G3, G4, the end of crystal oscillator JZ is connected with C1, and the other end of crystal oscillator JZ links to each other with the output terminal of G2; The other end of C1 and the input end that is connected to a G1 after resistance R 1 links to each other, the other end of resistance R 1 is connected to the output terminal of a G1; Capacitor C 2 is connected the output terminal of G1 and the input end of G2; Resistance R 2 is connected input end and the output terminal of G2; The output terminal of G2 is connected to the input end of a G3, and the output terminal of G3 is connected to the input end of a G4, and it is the oscillator power supply that direct supply is connected respectively to another input end of a G1, G2 through resistance R 5 and R3, R4; The K2 of dpdt double-pole double-throw (DPDT) coupled switch is connected to another input end of G3, and K1 is connected in the relay circuit.
The utility model is at busy relay during pickup time, 24V direct supply and K1 with relay coil, relay work connects into relay circuit earlier, the relay normal-closed end is connected to the junction of R5 and R3, Chang Kaiduan ground connection, K2 ground connection, as shown in the figure, this moment the oscillator oscillatory work, the exportable rect.p. of the output terminal of G2.Because the input end input low level of G3, then door G3 is closed and exports high level.And two input ends of door G4 are high level, and then the output terminal of door G4 is a low level, makes the output no pulse of entire circuit by G4.When coupled switch K1, K2 move the change position simultaneously:
(1) K2 shifts one's position, and opens a G3, because door G4 still is held open before the relay conversion, rect.p. output is arranged then this moment, promptly begins to count relay-operating time.
(2) K1 shifts one's position, and the relay coil energising is energized, the normally closed normally open position that goes to, and making a G4 input end is low level, and door G4 closes rect.p. can't be exported, and end relay-operating time.
Hence one can see that, the number of output rect.p. is exactly the needed time of relay adhesive, the output rect.p. as the counting clock pulse CP of counter when initial (note elder generation zero clearing), is shown that with display decoder and semiconductor can read with the microsecond is the pickup time of unit again.
The utility model is according to national standard [automatic fire alarm control systematic design discipline] GBJ116-88 chapter 7 7.0.3 clause regulation: " the direct current operative power source voltage of Fire Fighting Company dynamic control device should be 24V." then this circuit only detect the relay-operating time of direct current 24V.Door G1, G2, G3 and G4 can adopt TTL chip 74L,S02 two input ends four Sheffer stroke gates in the utility model.
The utility model is reasonable in design, and is simple and easy to use.
(4) description of drawings
Fig. 1 is the utility model circuit diagram.
Wherein: 1, oscillator, 2, output circuit, 3, relay.
Oscillator is made of crystal oscillator JZ, door G1, G2, resistance R 1, R2, capacitor C 1, C2, and output circuit is made of door G3 and G4, and direct supply is the oscillator power supply through the input end that resistance R 5 and R3, R4 are connected respectively to a G1, G2.
(5) embodiment
Embodiment 1:
The utility model constitutes oscillator by crystal oscillator JZ, door G1, G2, resistance R 1, R2, capacitor C 1, C2 as shown in Figure 1, forms output terminal by door G3, G4, and the end of crystal oscillator JZ is connected with C1, and the other end of crystal oscillator JZ links to each other with the output terminal of G2; The other end of C1 and the input end that is connected to a G1 after resistance R 1 links to each other, the other end of resistance R 1 is connected to the output terminal of a G1; Capacitor C 2 is connected the output terminal of G1 and the input end of G2; Resistance R 2 is connected input end and the output terminal of G2; The output terminal of G2 is connected to the input end of a G3, and the output terminal of G3 is connected to the input end of a G4, and it is the oscillator power supply that the 5V direct supply is connected respectively to another input end of a G1, G2 through resistance R 5 and R3, R4; The K2 of dpdt double-pole double-throw (DPDT) coupled switch is connected to another input end of G3, and K1 is connected in the relay circuit.Used components and parts are in the circuit: G1, G2, G3 and G4 adopt TTL chip 74LS02, and crystal oscillator JZ is 1MH, resistance: R1, R2 and R3, R4 1K, electric capacity: C1, C2 0.047u.
Claims (1)
1. the test circuit of a relay-operating time, it is characterized in that it is to constitute oscillator by crystal oscillator JZ, door G1, G2, resistance R 1, R2, capacitor C 1, C2, form output circuit by door G3, G4, the end of crystal oscillator JZ is connected with C1, and the other end of crystal oscillator JZ links to each other with the output terminal of G2; The other end of C1 and the input end that is connected to a G1 after resistance R 1 links to each other, the other end of resistance R 1 is connected to the output terminal of a G1; Capacitor C 2 is connected the output terminal of G1 and the input end of G2; Resistance R 2 is connected input end and the output terminal of G2; The output terminal of G2 is connected to the input end of a G3, and the output terminal of G3 is connected to the input end of a G4, and it is the oscillator power supply that direct supply is connected respectively to another input end of a G1, G2 through resistance R 5 and R3, R4; The K2 of dpdt double-pole double-throw (DPDT) coupled switch is connected to another input end of G3, and K1 is connected in the relay circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200228634U CN201043992Y (en) | 2007-06-04 | 2007-06-04 | Test circuit for relay response time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200228634U CN201043992Y (en) | 2007-06-04 | 2007-06-04 | Test circuit for relay response time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201043992Y true CN201043992Y (en) | 2008-04-02 |
Family
ID=39258885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200228634U Expired - Fee Related CN201043992Y (en) | 2007-06-04 | 2007-06-04 | Test circuit for relay response time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201043992Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977528A (en) * | 2014-04-11 | 2015-10-14 | 华北电力大学 | Magnetic latching relay actuation time and reset time detection device |
-
2007
- 2007-06-04 CN CNU2007200228634U patent/CN201043992Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977528A (en) * | 2014-04-11 | 2015-10-14 | 华北电力大学 | Magnetic latching relay actuation time and reset time detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 |