This 9-bit DAC circuit was found in the RCA CMOS integrated circuits manual of the 1970s. The circuit operates at 15 V and consumes between 70 and 200 mW. The currents at each outlet are approximately 400 uA.
This circuit can generate signals up to 100 kHz. Found in documentation from the 1980s, it makes...
Some old record players use variable reluctance phono pickups, requiring a special amplifier...
This circuit is from a Radio Electronics from July 1965. The circuit uses components from the time...