This circuit found in a 1964 US publication reverses the signal level by providing 9 to 0 V outputs from 0 to 9 V signals. Transistors may be equivalent.
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...