This circuit is from the 1990 Motorola Data Databook. The circuit can be implemented with equivalent transistors. The power supply must be symmetrical.
This network can be used in a sound project to control the tone. The circuit is from an...
This fast-acting circuit uses any phototransistor as a sensor. The circuit drives a 30 V relay, but...
This 1kHz filter with Q = 10 can be applied to any operator. The power supply is symmetrical and...