Multiplexed BCD Driver (CB20908E)

This circuit was found in an Electronics Now from the 80's. The circuit is designed for 3-digit displays. The circuit is TTL.

| Clique na imagem para ampliar |

Voltage Indicator (CB18187E)
This circuit for the 1.5 to 15 V scaled ranges was found in a 1982 documentation, but uses current...
Light Relay (CB473)
In this circuit the relay triggers on when light falls onto the sensor, a common LDR. Power supply...
3 to10 MHz Oscillator (CB13020E)
The modified Hartley oscillator seen in the figure can generate signals ranging from 3 MHz to 10...