Relay driver (CB20549E)

Found a documentation on PCs from 1996, this circuit can be used as a shield. The relay is rated at 100 mA of coil current.

Complementary Mini Amplifier (CB970E)
This simple circuit was found in the Spanish magazine “Todo Electronica”, in an edition of 1996....
Precision Diode LM101 (CB4607E)
The basis of this circuit is a National Semiconductor operational amplifier that functions as a...
LC Oscillator Using the 40106 (CIR092E)
A high-frequency square wave oscillator using an LC-tuned circuit is shown here. The upper...