Triple 5 V Numitron power supply (CB8673E)

This 1969 Electronics World power supply has 5 V to power digital circuits and a 170 V output for Numitron indicator valves used at the time.

| Clique na imagem para ampliar |

Rectangular Oscillator LM393 (CB4485E)
The circuit shown is from the 1993 Motorola Linear Interface ICs. The power source may be common...
DC to AC Inverter (CB8750E)
Found in 90s American documentation, this circuit generates an alternating voltage of 120 V x 150...
500 kHz to 30 MHz XTAL Oscillator (CB12700E)
The first circuit is shown in figure 3 and uses a 2N2222 transistor or equivalent. This circuit can...