This circuit is suitable for calibrating old oscilloscopes. It was found in a 1980s documentation. It generates precise signals given by the crystal.
Equivalent transistors can be used in this circuit for automotive applications in the 1980s. The...
This circuit was found in 1960s Radio Electronics. The circuit uses components from that time. The...
This amplifier for automotive use is from the Philips Databook of 1990. The integrated circuit must...