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  • Stepped Timer (ART726E)
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Circuit Bench

  • 800 Hz Astable (CB24409E)

      This basic CMOS 4001 circuit was found in the April 1976 issue of Radio Electronics magazine. The...

  • Audio Equalizer (CB10401E)

      This circuit was obtained in a 1980 English magazine, but it can be easily assembled today, since...

  • Darkroom photometer (CB8344E)

          This circuit is from the time when photos were revealed in darkrooms. We found it in a 1968...

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