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Circuit Bench

  • Decibel Meter (CB25898E)

      We found this measurement circuit with a logarithmic scale in an Electronics Now from November 1995....

  • Residential Alarm (CB17527E)

      This circuit was found in a 1986 documentation. The circuit uses 12 V relays and is powered by a...

  • Motion Doppler Sensor (CB8763E)

           This circuit was found in a 90s Popular Electronics. The sensors can be common speakers that reach...

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