New Jewel Thief "Resonate LCR Circuit" Much less energy draw....

[crowclaw]

considering mosfets?:

On top of this, I would rather be testing with MOSFETS, I was planing to test this particular circuit use two enhancement mode power mosfets rather than two transistors, just to see what the results would be like, as it stands the device uses very little current...

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Eliminating the current from base to emitter all together would thus lower the overall current usage, this is just common sense.  It makes more sense to use a MOSFET when the current consumption is near enough to the base-emitter leakage associated with turning it on in the first place.

I may wind up replacing the PNP transistor with a P-Channel enhancement mode mosfte and leaving the NPN transistor, as I can see the only place where current is really leaking through to ground ( about the transistors / semiconductors ) is through the PNP base-emitter ...  the oscillation are already voltage oriented pulse activated at this locate.

I have been warned about the sensitivity of the thin film glass metal oxide gate's sensitivity to electricity ( and hence their breakdowns ) .. I'll have to be extra careful with them in this case.

considering mosfets?:

On top of this, I would rather be testing with MOSFETS, I was planing to test this particular circuit use two enhancement mode power mosfets rather than two transistors, just to see what the results would be like, as it stands the device uses very little current...

- - - - - - -

Eliminating the current from base to emitter all together would thus lower the overall current usage, this is just common sense.  It makes more sense to use a MOSFET when the current consumption is near enough to the base-emitter leakage associated with turning it on in the first place.

I may wind up replacing the PNP transistor with a P-Channel enhancement mode mosfte and leaving the NPN transistor, as I can see the only place where current is really leaking through to ground ( about the transistors / semiconductors ) is through the PNP base-emitter ...  the oscillation are already voltage oriented pulse activated at this locate.

I have been warned about the sensitivity of the thin film glass metal oxide gate's sensitivity to electricity ( and hence their breakdowns ) .. I'll have to be extra careful with them in this case.
[/quote]
Hi Jadaro,

I go along with your idea with trying mosfet devices. I have tried a 2n7000 and it worked but the gate  voltage can be tricky to get them to work succesfully. Please keep us informed of your own findings using mosfets.
Kind Regards

[crowclaw]

Hi Jadaro,

I go along with your idea with trying mosfet devices. I have tried a 2n7000 and it worked but the gate  voltage can be tricky to get them to work succesfully. Please keep us informed of your own findings using mosfets.
Kind Regards

[jadaro2600]

Hi Jadaro,

I go along with your idea with trying mosfet devices. I have tried a 2n7000 and it worked but the gate  voltage can be tricky to get them to work succesfully. Please keep us informed of your own findings using mosfets.
Kind Regards

I have that part ordered as well; ..I think that saturation times are different for mosfets than they are from transistors, this must be in large part to the fact that current is flowing through them, perhaps a strategically placed capacitor can give a greater yield.

The placements of transistors seems unusual.

This brings me back to my original post regarding the unusual behavior of the PNP transistor and my inability to take and accurate readings of its frequency characteristics.

Would it always appear 'on' because the PNP is simply opening the NPN collector-emitter pathway and the oscillating?

Is anyone else having readings which vary from the NPN?  I'm actually wondering why this circuit uses so little current.

- - - - -

In the future mosfet setups I plan to use an electrically isolated trigger coil, it should behave just like a transformer, the initial pulse should create a voltage boost along the primary winding as it is, perhaps I can use this to get the timing right on the PNP base / gate area.  I'll post my schematics soon, I'm just waiting on the mail to come at this point.

[tysb3]

@ jadaro2600

this is Brovin's kacher. low power silicon transistor works with lockup base. just need to touch piece of wire on base to start spikes on collector. base coil could be connected too.

[jadaro2600]

@ jadaro2600

this is Brovin's kacher. low power silicon transistor works with lockup base. just need to touch piece of wire on base to start spikes on collector. base coil could be connected too.

I've been occupied lately, but I'll build that one too, looks interesting.