3 V buffer (CB7142E)

This 3 V rail to rail buffer was found in a National Semiconductor documentation. The gain is unit.

1 MHz FET Oscillator (CB6148E)
This circuit was obtained from HAM Radio magazine in an 80's issue. The FETs are types of the time...
Basic Flip Flop Using the 4013 (CB149)
This circuit turns on and off from pulses applied to the CLK input. The output 0 goes to the “’1"...
300 MHz transmitter (CB20473E)
This circuit uses a lower frequency crystal in an excitation system for an oscillator with a coil...