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  • Stepped Timer (ART726E)
  • Electronic Circuit Breaker (ART727E)
  • Electronic Cockroach Killer (ART649E)
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Circuit Bench

  • Voltage Controlled Function Generator (CB18882E)

      This circuit uses unusual operational amplifiers, but equivalents can be tried. FETs can also be...

  • 9V power source (CB21164E)

      This simple circuit with a 5V regulator was found in an American documentation from the 90's. The...

  • Experimental TTL Transmitter (CB15628E)

      Using a 7400 we have a short-wave transmitter from 4 to 9 MHz, shown in the figure. The coil...

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