sawnicxs

I used to have some information....which i have obviously misplaced. Wondering if anyone will remember what the part number and wiring configuation is for using a solid state transistor for remote turn on instead of a standard relay. I know the current limitations of using a solid state device and all, but in my application it is of no consequence. If any of you out there have any info...let me know, or if any of you have located your old mobile dynamics books under a pile of dust, you will find it in the level 100 book. (lost my book)

Thanks for any help you have.

abnormal72

Using a NPN transistor

wire the collector to 12v
wire 12v to switch then base
wire from emiter to device to be turned on and hook up ground from device
Device turned on will see approximately 12v-.7v= 11.3v

Best way to determine base, collector, emitter is a data sheet.

If you have a Npn transistor and a meter you can determine the base by reading a diode check with positive on base and negative on emitter
and a diode check positive on base , negative to collector
(you should read about .6-,7v both times)

A good npn transistor meters the same as two diodes facing away from each other with both anodes(positive) connected together at the base.

Generally in npn transistors to be attached to a heat sink the collector lead is the same point as the place (the back, exposed part) to be connected to the heat sink

Tom.F.1

iTrader: (1)

I recently installed a solid state relay for a control circuit at work. It cost about $ 65 with the relay and socket, from electrosonic. They have lots of choices. 2 amp to 90 amp output.
On the other hand, my 39.95 LOC from bestbuy has a built in 2 amp remote output, SSR with optional 2 second delay.