This amplifier for playback of recordings was found in a 1947 manual. It uses a push-pull output with a tube power supply.
For 220 pF C1 this circuit generates a 10 MHz signal. Other frequencies can be obtained with...
This circuit, found in a 1978 publication, converts 5 V into a symmetrical 15 V output under low...
This circuit is indicated for the application that the motor must not simply rotate but give a...