CN205281162U

CN205281162U - Delay circuit of low level signal control

Info

Publication number: CN205281162U
Application number: CN201620005722.0U
Authority: CN
Inventors: 曾建
Original assignee: Guizhou Aerospace Fenghua Precision Equipment Co Ltd
Current assignee: Guizhou Aerospace Fenghua Precision Equipment Co Ltd
Priority date: 2016-01-04
Filing date: 2016-01-04
Publication date: 2016-06-01
Anticipated expiration: 2026-01-04

Abstract

The utility model provides a delay circuit of low level signal control, control signal is connected to the positive pole of control relay K1 coil, the anodal of delay relay K2 and changeover control relay K3 coil all is connected with positive, and delay relay K2 belong to prop up on the road the normally closed auxiliary contact K1 -1 that still series connection has control relay K1, still establishing ties on the road of changeover control relay K3 place has delay relay K2's the auxiliary contact K2 -1 that normally opens, changeover control relay K3's the auxiliary contact K3 -1 that normally opens sets up on the circuit of being controlled signal transmission. The utility model discloses an all use homemade relay to accomplish low level signal control delay time circuit, integrated digital chip control circuit outside the use state has not reduced the dependence to the import components and parts, through the large -scale changeover control relay of small -size delay relay control, can effectively reduce the circuit volume simultaneously, the circuit structure of this circuit is very simple, and the reliability of control is very high.

Description

The time delay circuit of a kind of low level signal control

Technical field

The utility model relates to control and time delay field, is specifically related to the time delay circuit of a kind of low level signal control.

Background technology

It is widely used in civilian, military electronic product owing to low level signal controls time delay circuit. And such circuit mostly adopts integrated digital chip to complete signal judgement and delays time to control function at present. But due to the Dou Shi offshore company production substantially of integrated digital chip, belong to import components and parts. If for military electronic product, there is quality grade low, use can not be met; Environment for use is limited, and temperature range and the vibration condition of energy normal operation are relatively little; The supply of material ensures the unfavorable factors such as unreliable.

Practical novel content

For solving the problems of the technologies described above, the utility model provides the time delay circuit of a kind of low level signal control, by all using, domestic rly. completes low level signal control time delay circuit to the time delay circuit of this low level signal control, thus solves the dependency problem to external integrated digital chip control circuit.

The utility model is achieved by the following technical programs.

The time delay circuit of a kind of low level signal control that the utility model provides, comprises relay K1, timing relay K2 and conversion and control relay K 3; Control signal is connected to the positive pole of described relay K1 coil, the positive pole of described timing relay K2 and conversion and control relay K 3 coil is all connected with positive source, and the branch road at timing relay K2 place is also in series with the normally closed auxiliary contact K1-1 of relay K1, what the branch road at described conversion and control relay K 3 place was also in series with timing relay K2 often opens secondary contact K2-1; The secondary contact K3-1 that often opens of described conversion and control relay K 3 is arranged on the circuit of controlled Signal transmissions; The coil negative pole of relay K1, timing relay K2 and conversion and control relay K 3 is all connected with power cathode.

The quantity of described conversion and control relay K 3 is multiple.

Described conversion and control relay K 3 is provided with multiple secondary contact.

The beneficial effects of the utility model are: by all using domestic rly. to complete low level signal control time delay circuit, do not use external integrated digital chip control circuit, reduce the dependency to import components and parts; Controlling large-scale conversion and control rly. by small-sized timing relay simultaneously, can effectively reduce circuit volume, the circuit structure of this circuit is very simple, and the reliability of control is very high.

Accompanying drawing explanation

Fig. 1 is schematic diagram of the present utility model.

Embodiment

Further describe the technical solution of the utility model below, but described in claimed scope is not limited to.

The time delay circuit of a kind of low level signal control as shown in Figure 1, comprises relay K1, timing relay K2 and conversion and control relay K 3; Control signal is connected to the positive pole of described relay K1 coil, the positive pole of described timing relay K2 and conversion and control relay K 3 coil is all connected with positive source, and the branch road at timing relay K2 place is also in series with the normally closed auxiliary contact K1-1 of relay K1, what the branch road at described conversion and control relay K 3 place was also in series with timing relay K2 often opens secondary contact K2-1; The secondary contact K3-1 that often opens of described conversion and control relay K 3 is arranged on the circuit of controlled Signal transmissions; The coil negative pole of relay K1, timing relay K2 and conversion and control relay K 3 is all connected with power cathode.

The quantity of described conversion and control relay K 3 is multiple.

When control signal is high level, relay K1 coil is in action state; The normally closed auxiliary contact K1-1 of relay K1 is in disconnection state, and the coil of timing relay K2 and positive source are disconnected; Timing relay K2 is in off working state; The secondary contact K2-1 that often opens of timing relay K2 is in disconnection state, and the coil of conversion and control relay K 3 and positive source are disconnected; Conversion and control relay K 3 is in off working state, and the secondary contact of often opening of conversion and control relay K 3 are in disconnection state, and namely the circuit of controlled Signal transmissions is disconnected. When control signal is lower level, the coil of relay K1 is in non-action status; The normally closed auxiliary contact K1-1 of relay K1 is in closed state, and the coil of timing relay K2 and positive source are connected; Timing relay K2's is in running order; The secondary contact K2-1 that often opens of timing relay K2 is in the closed state of work after the time delay time of setting, and the coil of conversion and control relay K 3 and positive source are connected; Conversion and control relay K 3 is in running order, and the secondary contact of often opening of conversion and control relay K 3 are in closed state, and namely the circuit of controlled Signal transmissions is switched on. The secondary contact number of conversion and control relay K 3 can be expanded according to actual needs or increase the number of conversion and control relay K 3.

The utility model replaces electronic chip with domestic rly., well solves the requirement of circuit production domesticization, and takies less volume.

Enforcement mode of the present utility model is not limited to above-described embodiment, and the various changes made under the prerequisite not departing from the utility model objective all belong within protection domain of the present utility model.

Claims

1. the time delay circuit of a low level signal control, comprise relay K1, timing relay K2 and conversion and control relay K 3, it is characterized in that: control signal is connected to the positive pole of described relay K1 coil, the positive pole of described timing relay K2 and conversion and control relay K 3 coil is all connected with positive source, and the branch road at timing relay K2 place is also in series with the normally closed auxiliary contact K1-1 of relay K1, what the branch road at described conversion and control relay K 3 place was also in series with timing relay K2 often opens secondary contact K2-1; The secondary contact K3-1 that often opens of described conversion and control relay K 3 is arranged on the circuit of controlled Signal transmissions; The coil negative pole of relay K1, timing relay K2 and conversion and control relay K 3 is all connected with power cathode.

2. the time delay circuit of low level signal control as claimed in claim 1, it is characterised in that: the quantity of described conversion and control relay K 3 is multiple.

3. the time delay circuit of low level signal control as claimed in claim 1 or 2, it is characterised in that: described conversion and control relay K 3 is provided with multiple secondary contact.