Selfrunning cold electricity circuit from Dr.Stiffler

[DrStiffler]

Hi gadgetmall,

here you can see how to measure your supercap.

Regards

Kator01

@Kator01 @All

I'm not back to get into discussions or start the usual fireline as last time, I may pop in no and them when it looks like a bit of input may help.

And so is the case with Super Caps. Measuring the time constant of Super Caps is a waste of ones time, it does not provide accurate information.

I have included a link to a paper I did on Boost Caps and the paper contains references to other papers and manufactures on how a Super Cap must be tested. If not done properly many different values can be determined from the same cap under test.

http://www.scribd.com/doc/12389577/Auto-Audio-Boost-Capacitor-Test-Paper

[powercat]

Kator01
gadget is not posting in this thread, as this is the circuit from Dr.Stiffler thread.
BTW gadget is using an ultra-cap not a super.
cat

[PaulLowrance]

Dr. Stiffler,

You definitely know you stuff, which is refreshing to see at this forum. May I ask what were the power ratings of the 3 resistors used in capacitance measuring experiments.

Paul

[DrStiffler]

Kator01
gadget is not posting in this thread, as this is the circuit from Dr.Stiffler thread.
BTW gadget is using an ultra-cap not a super.
cat

@Powercat

FYI

http://www.hpcwire.com/industry/manufacturing/Maxwell-Technologies-ANSYS-Release-Ultracapacitor-Components-Library-52453812.html

I think you will find that a SuperCap and UltraCap are separated only by Trade Name

[DrStiffler]

Dr. Stiffler,

You definitely know you stuff, which is refreshing to see at this forum. May I ask what were the power ratings of the 3 resistors used in capacitance measuring experiments.

Paul

Mr. Lowrance

All the resistors are 1/4W and can be 1/8W. If you wanted to all the resistors (for test exploration only) can be removed after the Exciter starts oscillation. The 1M resistor is only needed to start oscillation at which point the transistor goes into a -R operational mode and does not require the DC bias offered by the base resistor.

This is not a conventional oscillator and (alpha) (gain) is not provided via the normals pathways. I keep correcting people on the assumption that this is a Collpits and even had one fellow fight that it was an Armstrong design. If one needs something conventional to feel good about the design is closest to the Clapp Oscillator. Although as with all my Exciters this is a -R Ultra Bandwidth Bifurcating Oscillator.