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triggering circuit

C

charter

Jan 1, 1970
0
I want to make a car door locks triggering circuit.

When the cars ignition is turned on, power is supplied to the circuit and it
provides a 1 second burst of power (2 amps maximum) to another circuit like
power door locks.

any help would be great

Thanks,
Gundy
 
L

Luhan Monat

Jan 1, 1970
0
charter said:
I want to make a car door locks triggering circuit.

When the cars ignition is turned on, power is supplied to the circuit and it
provides a 1 second burst of power (2 amps maximum) to another circuit like
power door locks.

any help would be great

Thanks,
Gundy
How about connecting to the 'starter' lead on your ignition. This will
give power only while cranking. The door servo units can withstand
several seconds of continuous power.
 
C

charter

Jan 1, 1970
0
That is what I am doing now... I would like something a little "cleaner"
We were discussing it over cocktails, and could not come up with a simple
circuit.
That's why I came here. ;-)
Any ideas??

Thanks,
Gundy
 
J

JeffM

Jan 1, 1970
0
...car door locks triggering circuit
1 second burst of power (2 amps maximum)
Gundy "charter"

555 wired as a one-shot (monostable multivibrator);
see the National Linear Databook.

Relay with 12Vdc coil (>75ohms), 2Adc contacts.
 
G

GPG

Jan 1, 1970
0
IGN ---|---------- -----------|
| v / |
| --- |
| | |
|----|<-----| |
.-. |
| | | |
| | -|\|- RELAY
'-' |_|
| |
| + |
### |
--- |
| |
0V |
0V
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de
 
G

GPG

Jan 1, 1970
0
See that it didnt post well, so again










IGN ----|---------- ------------|-------|
| v / | |
| --- | |
| | | |
|-----|<----- | |
.-. | |
| | | |||
| | - -|\|- RELAY
'-' ^ |_|
| | |
| + 0V 0V
###
 
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