Piezoelectric solar container battery

I used a function generator to supply 5V ac to an op amp(Ua741) to amplify this signal to around 30 V (Dc power supply) However when i measure the output after the op …

Howdy: I am attempting to build an ultrasonic "Dog Chaser" using a classic push-pull driver (circuit attached), and a cheap Piezo Tweeter. I use a PIC to output varying …

they''ve been also known to be somewhat microphonic due to the piezoelectric effect in some ceramics. i''ve repaired guitar amps where somebody replaced some coupling caps …

At a first order, the equivalent circuit of piezoelectric (xtal of ceramic) device is a voltage generator in series with a very small capacitor, of only a few picro farads. The voltage …

Hello all never really done this before but here goes nothing, I am looking talk to an engineer (I have no idea what kind of engineer I am looking for) to help design piezoelectric …

what is the output of piezoelectric if piezo material is under stress, the output is DC or AC? what is the relationship between voltage and current? is the high voltage produce high …

Hi guys Can someone take a look at this schematic and see if there are any glaring issues with it? I''m pretty new to circuit design so most of what I have is from looking at the …

So my car''s cigarette lighter is always powered even when the car is switched off. I am attempting to make it switched so that the power is only on when the...

Higher end nebulizers for medical use (higher end meaning expensive!) use these higher frequencies because they are WAY outside the impedance of sound waves in water …

Hey, I got really bored and decided to try to make a shocker. It didn''t work :confused:. I then looked up how and have a few questions on the design. I have a 9v battery …