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Electronic timer


— Posted by iamkonan on 7:16 pm on Feb. 27, 2002

HOW DO I TURN THE PATHETIC OUTPUT FROM MY DIGITAL TIMER TO A HIGHER VOLTAGE THAT WOULD POWER A ROCKET IGNITER AND THEREFORE START OFF MY PETROL BOMB>

(Theres a button called “caps lock” turn it the fuck off b4 i bann you!!)
TGM…

(Edited by The Great Milenko at 10:36 am on Feb. 28, 2002)


— Posted by Just0nePepsi on 7:22 pm on Feb. 27, 2002

Are you looking for a timer or how to get better voltage from your clock. You are confusing me.


— Posted by Hergor on 8:10 am on Feb. 28, 2002

i think i posted a solution to something like that in ‘digital timers with a 6V or 9V output‘ or however the title was. but i did this in the ‘electronics‘ section…

(Edited by Hergor at 8:11 am on Feb. 28, 2002)


— Posted by Zambosan on 12:59 pm on Feb. 28, 2002

What is the output like? (voltage/current)
If it can handle 100 or so milliamps, you can use it to directly drive a relay coil (be sure to install a reverse-biased diode to snub the reverse EMF from the coil on switch-off).  If not, you need to preamplify it before the relay, a cheap li’l common-emitter amp can be made from 2 resistors & a silicon bipolar transistor with decent gain, e.g. 2n2222, from Radio Hack.  Alternately, I’ve gotten my hands on some neat little opto-electronic relays, part PVN012, from International Rectifier.  They require only about 10-20 mA drive, and can handle up to 6 AMPS, AC or DC on the output side!!!  Fantastic little things.


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