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$begingroup$High-voltage fault protection ICs are switches designed to protect system output power supplies against over-current or short-circuit conditions. Complementary MOSFET Level Translator and Drivers Complementary FET drivers use our proprietary HVCMOS technology to create a fully isolated driver for our complementary MOSFET products. CMOS Piezo Transducer Buzzer Driver Circuit A CMOS gate and transistor buffer can be used as an effective driver for a piezoelectric or piezoceramic transducer. ↓ Skip to Main Content. Electronicecircuits.com is the free Encyclopedia of Electronic Circuits. CMOS Piezo Transducer Buzzer Driver Circuit. Application Circuit for Piezo Transducer. A piezo transducer can be driven with a circuit similar to a magnetic transducer. The diode across the piezo transducer is not required because the inductance of a piezo transducer is small, but a resistor is required to reset the voltage when the switch is open. It is time-consuming and risky to provide piezo components with strands and to contact them on printed circuit boards yourself. PI Ceramic takes on this step for customers and supplies piezoceramic components with flexible printed circuit boards. Piezo Drivers, Amplifiers & Controllers. A piezo buzzer acts very similar to a capacitor and needs a push-pull driver circuit to charge and then discharge the capacitance of the piezo. However a piezo will work quite well with a small modification to your original circuit, with a 1k Ohm resistor placed across the piezo buzzer to discharge its capacitance.
For a university project, I'm creating my own small speaker. This speaker includes a speaker driver circuit consisting of a transistor and 3 resistors (see figure below).
simulate this circuit – Schematic created using CircuitLab The power source is limited to 1.5V, but I would like to boost this voltage using a voltage boost circuit.
The voltage boost circuit actually is an oscillating circuit including an inductor, diode, switch (oscillating) and a capacitor (see figure below). I think the 'timed switch' can be attached to the 'feedback' pin from the piezo.
Since the piezo driver circuit is a kind of oscillating circuit, I thought it would be nice to combine both circuits. So the piezo driver circuit would be used as the oscillating circuit of the voltage boost circuit.
Both circuits work separately, but not combined. When replacing the light bulb with the piezo, the piezo doesn't vibrate since the capacitor keeps the voltage constant, but the piezo needs to be turned on and off very quickly in order to vibrate.
Somehow, the capacitor needs to power the piezo driver circuit again, but I cannot yet figure out how. Below is my attempt.
Can any of you maybe guide me in the right direction?
Piezo Driver Ic
I hope you understand what I'm trying to do. Otherwise I'll be happy to try to explain it in a different way.
Piezo Driver Schematic
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