Ultra compact - 32mm/ 21mm/ 17mm
For demonstration how timer work please see here: http://youtu.be/8o3bpREL2nU
Tiny Timer Light Switch presented here is a simple transistorised electronic timer which drives a high efficiency white LED for a finite time out. This circuit is very useful for in-car reading etc. The circuit works off 12 volt dc supply. Fit the unit at a suitable location inside your car and power the circuit from the in-dash standard cigar lighter socket. The timer light switch is ultra simple, economic, straight forward and self explanatory.
Time relay with accuracy from 1 to 190 seconds.
- length - 32 mm
- width - 21 mm
- height - 17 mm
Power: + , - Have protection against reverse supply voltage.
Direct 12V Output 0.15A - can carry powerful diode.
Wired with 10cm wires:
- red - input positive 12V+
- black - input negative 12V -
- white - output positive 12V+
- blue - output negative 12V-
Power supply - 12V DC
Time is adjusted by trimmer a PR - 100K.
Start button - can be extended by wires and placed separately
Principle of work:
When power is on, the relay wait for filing a pulse form ON button. Once it is pressed - timer is activated and keep that position, until end of set time.
By filing new pulse at start button - cycle repeats.
Device doesn't have plastic box, only plate, as it is seen on the picture.
1. Time Relay
2. Instruction for use and wiring diagram.