Hi,
I am doing a project in which i need to power piezo transducer with 140 kHz ~20V signal. When I`m powering piezo with generator it only takes 6mA. But when I try to power piezo with my circuit it takes more than 1A. When i place resistor it gets hot and circuit lose power. Where is the problem?
Maybe you could give me advice of alternate ways to power piezo with such a signal? **broken link removed**
Is this your circuit?
How much current is available at the 20 V source?
What is the value of L1?
Do you know why L1 is in the circuit?
Manufacturer / part number for the transducer?
Nicolaii get the RLC Nomograph and look up impedance at resonant f and ask yourself , does f match source and what is impedance of the switch and why does this lower Q in a shunt tank. Try a linear bias current sink sine wave at resonant f instead of a switched square wave and don't saturate L. Add plastic C if f is fixed.
Hi,
I am doing a project in which i need to power piezo transducer with 140 kHz ~20V signal. When I`m powering piezo with generator it only takes 6mA. But when I try to power piezo with my circuit it takes more than 1A. When i place resistor it gets hot and circuit lose power. Where is the problem?
Maybe you could give me advice of alternate ways to power piezo with such a signal? **broken link removed**