Burst generator (CB21067E)

Found in American documentation from the 90s, this circuit generates sound bursts according to the digital control.

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3-Bit A-D Converter (CB14253E)
This circuit was found in the Linear Applications Handbook by National Semiconductor. It uses...
1-quadrant logarithmic converter (CB7333E)
This temperature compensated circuit was found in a Popular Electronics from the 90s. Integrated...
Monochannel Remote Control Receiver (CB18340E)
This circuit can operate with 27 MHz transmitters, having been found in a Japanese publication from 1967....