car Heater fan controller in NUTS & VOLTS

[dorf]

I found car Heater fan controller in NUTS & VOLTS Magazine December 2005.page 13.

But problem is that i do not know whatkind capacitors are.
47µf is electrolyt capasitor that i know. i can only guessing that rest of them are "caramic" and "film capasitor", what is what, that is mystery.

there is -20 celsius out at this moment,need some heat in car.

help ...---...

[Gorgon]

Hi Dorf,
I don't think the type of capacitor matters too much in this design. The smaller ones, 2nF7 and 10nF, I would suppose is ceramic and the 330nF is a film type. The main issue is to get the values correct.

Please note that the input and output terminals on voltage regulator 78L05 is reversed. The input should be connected to the +12V.

TOK

[dorf]

Thanks.Gorgon