Using L144 operational, this circuit applies to other equivalent operational. The circuit is from a documentation two years 90. The power supply must be symmetrical.
This power supply was originally designed to power a 260 W amplifier (CB17064E) delivering 45 V...
Found in a Hands-On Electronics from the 90s, this circuit produces the dial tones of an old...
We find this circuit in a 1980s documentation. The integrated circuit used is unusual today. The...