Remote Control Decimal Decoder (CB24833E)

To work with the above circuits, this decoder provides an output of 10. The circuit is from an August 1984 Radio Electronics. See the above circuits.

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TIP31 and TIP32 1W Amplifier (CB25709E)
This small audio amplifier was found in the May 1994 issue of Electronics Now magazine. The power...
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The displayed relay operates with an audio signal applied to the input. The transistors can be...
Photodiode Amplifier 1 (CB13092E)
The circuit shown in the figure and uses the diode in the leakage current operation mode. In it,...