I've tried to turn on small calculator (Rated Voltage : 1.5V) with charged capacitor C.

Anyway when I connected fully charged cap to load. Then voltages dropped down with mysterious reason.


In detail, I used TENG to voltage source, (TENG is a pretty similar source to PIEZO .)

To turn on rated voltage 1.5V calculator, I charged enough 2V to cap.
Next step, I connected 2V charged cap to calculator.
It doesn't work.

How can I make this situation better?



Here is the circuit diagram what I designed.

And this is voltage curve measured by voltmeter.

You can see voltage drop after connecting to load

 

It seems your TENG cannot supply enough power to run the calculator.
https://www.nature.com/articles/s41528-017-0007-8

 

Welcome to AAC!
I agree with Albert. What is the capacitor value?

 

You do know that the voltage on a capacitor drops when you draw current from it, right?

Bob

 

You do know that the voltage on a capacitor drops when you draw current from it, right?

Bob

Yes It does. Any ideas to make this situation better?

 

With the inductor and switch, are you trying to make a boost converter ? If the switch was a BJT or MOSFET and turned on/off rapidly, like 10,000's of times a second, in order for the current to keep flowing in the same direction in the inductor, when the switch open's it should make a voltage higher on the cap side, and lower on the diode side...and create a higher voltage that u started with. But you have a transformer/FWR, that should be over 1.5V with any size thransformer, and tank cap. ......or have 3 beers gotton to me

 

It sounds like you are trying to get a lot more energy from your source that it is able to supply.

 

Yes It does