This circuit with 10 MHz and 1.25 MHz TTL outputs was found in an American documentation from the 1980s. The used integrated circuit is uncommon today.
This power supply also has a fine adjustment feature. The transformer is 16 + 16 V with 3 A and...
This circuit was obtained in a 1985s English magazine. The circuit can still be assembled with...
The circuit shown in the figure is suggested by Texas Instruments in its Linear Circuits...