We found this good amplifier in a Japanese publication of 1966. Transformers are uncommon nowadays and the power supply is included. Power is a few watts.
This circuit is one of many that the reader can find in this section for testing crystals. The...
This circuit was found in a Philips documentation from 1966. Its purpose is to drive the solenoid...
This sinusoidal oscillator is suggested by Texas Instruments' Linear Circuits Applications, using a...