Solar timer (CB20498E)

This very low consumption circuit can be powered by a solar cell. The time indication is given by a microammeter.

Driving a 7 segment Display 4511 (CB084E)
The 4511 is a 7-segment latch driver providing up to 25 mA in each output. The typical application using the...
Application of the 4 and a half digit AD7129 converter (CB14869E)
This circuit is from the 1983 Intersil manual. The display is a 4.5-digit LCD, and the power...
Modulated infrared transmitter (CB20968E)
Found in a Popular Electronics from the 90s, this circuit can act as a transmitter for an audio...