Cap Dump Circuit

[BroMikey]

How to connect Complementary Pair

Here is a diagram with 2 separate circuits in it. Please download a copy to your desktop and draw lines to connect the two for a general idea of how it basically could be done.

Here are the two circuits. Then upload your connection alteration so we can see.

connection2.JPG

Thank you for your consideration.

I will be back soon with complementary diagrams but the problem is that most of the circuits on the web all center around driving a motor.

Mike

[BroMikey]

GenWave

Here is a diagram of how my Bedini energizer in GENMODE fills caps. It self regulates to the load and the wave will falter and stall briefly under a direct short condition, rather than burn out components.

Here is the way it looks on the scope when filling up my capacitor bank.

GenWave.JPG

As the caps fill the wave narrows and rises in voltage til dumping comes.

Then the process is repeated. No extra resistance in the circuit is used, so the circuit is energy wise.

Mike

[wayne.ct]

Many uses for the 555

The 555 can be used as a one shot or as a PWM which makes it possible to do a lot of things that you may be interested in. For example, use one to control the overall speed of your pulses and then use two more to control the length of on time for your charge and dump pulses. You may need to invert the polarity of the signal to the reset pin of the 555. You can use a simple transistor inverter for that. With appropriate pots attached you can control every important parameter in your setup. I have enjoyed following this thread so far, Mike. Thanks for your original post and the valuable conversation.

[BroMikey]

Diagram connections

The 555 can be used as a one shot or as a PWM which makes it possible to do a lot of things that you may be interested in. For example, use one to control the overall speed of your pulses and then use two more to control the length of on time for your charge and dump pulses. You may need to invert the polarity of the signal to the reset pin of the 555. You can use a simple transistor inverter for that. With appropriate pots attached you can control every important parameter in your setup. I have enjoyed following this thread so far, Mike. Thanks for your original post and the valuable conversation.

@ Wayne

Thanks, glad you are here.

This is one possible connection

connection2a.JPG

Maybe I should have gone to source on the negative?

Mike

[BroMikey]

Resistors added

Maybe add resistors to protect the base from over voltages.

connection2b.JPG

If anyone thinks this looks right let me know.

Mike

[Shanjaq]

Why an opto and not a level shifter? For so long as the gate voltage is between 0 and 18v the drain-source resistance is high, which means the power dissipation is occurring in the switch tending toward damage. Optos are slow, level shifters are as fast as a small-signal transistor.

[BroMikey]

I am listening

Why an opto and not a level shifter? For so long as the gate voltage is between 0 and 18v the drain-source resistance is high, which means the power dissipation is occurring in the switch tending toward damage. Optos are slow, level shifters are as fast as a small-signal transistor.

Hello Shanjag

I am open to a circuit. Okay 555 timer to level shifter. Humm

let me see your example. There are so many possibilities. All I ask is to get me within range of this idea. I need a circuit diagram. Beyond a working general idea of what you are thinking about is just an input that diverts our attention out into space.

Show us your idea and we can consider the thought better.

Thank you for your kind suggestion.

Mike

[BroMikey]

Level shifter for Shanjaq

Why an opto and not a level shifter? For so long as the gate voltage is between 0 and 18v the drain-source resistance is high, which means the power dissipation is occurring in the switch tending toward damage. Optos are slow, level shifters are as fast as a small-signal transistor.

Hi Shanjaq

Is this your circuit? Let me know if your circuit works better or how to use it.



Mike

[Dave45]

I have been searching for an ic to drive pnp and npn gates and cant seem to find one.
One way to do it is to use an npn transistor to drive the pnp gate.
Most if not all gate drivers that I have found are made to drive one or the other in pairs but not both.


An idea I have been working out for awhile.

[BroMikey]

Still Thinking

I have been searching for an ic to drive pnp and npn gates and cant seem to find one.
One way to do it is to use an npn transistor to drive the pnp gate.
Most if not all gate drivers that I have found are made to drive one or the other in pairs but not both.


An idea I have been working out for awhile.

Hi Dave

I think you are on to something there. Nice circuits. What about tying the gates together so when the PNP fires so does the NPN??

I am looking at your circuit now.

Mike

[Dave45]

I should have stated this is a synchronous buck converter, the Q2 switch takes the place of a diode (less loss), the switches are out of phase.
But Q1 should be pnp.

[Dave45]

Hi Dave

I think you are on to something there. Nice circuits. What about tying the gates together so when the PNP fires so does the NPN??

I am looking at your circuit now.

Mike

The pnp and npn need to be out of phase,,,, I think.
Its the bemf that is collected
pos bemf from the npn pulsed coil
neg bemf from the pnp pulsed coil

In a joule thief the coil is pulsed with an npn transistor and we get a pos bemf which will light an led well, led's take very little current, but to sustain a battery or cap we need both.
pos and neg bemf

[BroMikey]

Like this?

The pnp and npn need to be out of phase,,,, I think.
Its the bemf that is collected
pos bemf from the npn pulsed coil
neg bemf from the pnp pulsed coil

In a joule thief the coil is pulsed with an npn transistor and we get a pos bemf which will light an led well, led's take very little current, but to sustain a battery or cap we need both.
pos and neg bemf

Hello Dave did you mean like this?

converter.jpg


Mike

[Dave45]

Yes, but the ic is not made to run the pnp gate.
I have been searching for an ic to run both pnp and npn gates but no luck.
The pnp gate has to have a neg bias and the npn gate has to be pos biased.

[BroMikey]

Attachments

I am running out of room for attachments so I will be putting my materials here in safe keeping.


BroMikey's Science Projects



This site only allows , I think, 3mgbs? And after 3 months here at this site I have exceeded my amount of space.

This website will be here forever and my work can be seen by everyone desiring to do battery pulsing experiments.

Also some critical text that I have written will also be transferred and placed by the diagram so sense can be made out of the pictures.

So far you will see driver, timer type chips and mosfet circuits to experiment with.

It is better to have it all together.

Mike