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Overunity Machines Forum



Help making a 2 transistor circuit to do what a SPDT swich does

Started by gotoluc, August 21, 2008, 05:22:25 PM

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Groundloop

#5
August 21, 2008, 11:53:28 PM
c0mster,

The 4016 are a great ICs, but they are not suitable for high voltage and current. The 4016 can handle +/- 7,5 Volt at maximum.
Since the internal ON resistance of each switch is typical in the 200-300 Ohm range, the current through each swicth will be very limited.

Groundloop.

c0mster

#6
August 21, 2008, 11:58:19 PM
Thought it might be good to drive the fets.

Groundloop

#7
August 22, 2008, 12:07:33 AM
c0mster,

Ah, sorry, did not think of that. :-)

Another way to control my circuit is by using a 555 as a oscillator with one inverted, and one non-inverted output.

Groundloop.

Groundloop

#8
August 22, 2008, 12:48:59 AM
Luc,

I have added a 555 oscillator circuit for controlling the switch. The 1uF capacitor may be bigger to get the correct switch frequency.

Groundloop.

wattsup

#9
August 22, 2008, 01:26:16 AM
@gotoluc

Very good question. Just what the doctor ordered. I have been puzzling about thin one myself.

@c0mster

Good to read you again and thanks for that link.

@Groundloop

You too. Thanks.

So I could connect my FG to the 4016 to drive my 9540's on the positive side and my 840s on the negative side of a given coil scheme.
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