2-bit decoder 7400 (CB22421E)

This circuit decodes a two-bit value into four outputs (one of four). The circuit must be powered by a voltage of 5 V.

Crystal Signal Generator (CB6189E)
This QST circuit generates 4 frequency signals according to the crystals used. Transistors admit...
Wien II Bridge Oscillator (CB4924E)
This circuit generates signals from 0.01 Hz to 10 kHz, but uses unusual components today. The...
Dimmer with SCR (CB1350E)
This dimmer or light control for incandescent light bulbs or even small heaters, is one of many...