Guitar amplifiers using output devices such as the TDA7293 (100 W) or LM3886 (68 W) are surprisingly often damaged as a result of excessive supply voltage in the quiescent state. The transformers are ...

Fig 1. Placing this two-terminal circuit between a GFCI line-load terminal and ground creates an adjustable line-voltage limiter. Fig 2. With the trip point set at 133 V rms, the circuit draws less ...

A Zener diode is the simplest known type of voltage limiter (Figure 1) As soon as the voltage exceeds the rated voltage of the Zener diode, a current can flow through the diode to limit the voltage.

Some systems require a voltage limiter to protect the input circuit. Designers can connect diodes (Fig. 1) to V CC and Gnd to create a simple solution. This simplicity, however, comes at a ...

Integrated circuits require a variety of voltages and a wide range of currents, typically supplied by voltage regulators. But increasing power density is resulting in higher power delivery losses.