Reply to "Recommendation Wanted for DC step-up transformer"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

I'd use the PS/2 smoke unit and a lower voltage DC power supply. For the fan, you can simply use a couple dropping diodes from the heater voltage. The heater at 8 ohms will require from 7 to 9 VDC to product a lot of smoke, the fan will run on anything from around 3V to 5V and produce a nice air stream.

FWIW, the actual behavior of the one I have in my vise in the shot above didn't regulate down until 16 volts DC, then the current dropped a bunch but still plenty of smoke. On AC (pure sine wave), at around 12.5V the switch occurs with the regulator circuit.

1/11/223:26 PM

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