Projects by members > Donaldwfc

Opto - Transistor Pulsing Circuit

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haithar:
In which range is the frequency?
Also how do you measure the voltage?
Note that my circuit is inverting if used in that way.
I'd prefer the 12A mosfet, as the Uds is not as high (6V is enough).

Donaldwfc:
I'd like to be able to use it in the range of a few hundred hz to 20 khz
i have 12 volts from the power supply
2.4 - 2.8 volts going into the primary
5-6 volts at the cell
also measured at the output of the power supply it was drawing between 2 and 3 amps
the heat sink and transformer started getting hot

also i should mention, i have a diode before the primary and a diode after the primary, so this should take up 2 volts, but i am thinking of removing these (i still have another diode backwards across the primary as required)

This is the step up I am currently using, but i will be making another one sooner or later
(http://img.photobucket.com/albums/v81/bigbuba/Picture33-1.png)

Donaldwfc:
What do you think of this? ... With the 12 amp MOSFET
Do I need the capacitor in there?

(http://img.photobucket.com/albums/v81/bigbuba/Circuit1.jpg)

haithar:
when the pulse comes the coil is disconnected, is that what you want? then its ok

Donaldwfc:
when a pulse-on comes from the microcontroller, i want this to pulse-on the power supply

would this circuit work backwards?

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