Gain 10 Voltage Amplifier (T456E)

This 4-stage circuit has a voltage gain of 10 and negative feedback. The circuit was found in an old MIT publication.

Pulse Width Multiplier (CB6349E)
This circuit is intended to increase the width of a pulse. The circuit is TTL and can be used as a...
Sequential with triac (CB7200E)
This sequential circuit appears in other versions on this site. This is from American...
PWM speed control (CB7173E)
Suggested by Motorola documentation from the 1980s, this circuit can be implemented with...