Audio Booster (CB6181E)

This reinforcing stages from a 1960s documentation. No information is given about the transformer and the transistor admits equivalents.

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Tapedeck Motor Speed Control (CB17104E)
This is another practical idea found in a 1997 documentation. This circuit allows a DJ to change the...
TTL Data Transmission (CB16024E)
The circuit shown in the figure is suggested by Texas Instruments and allows data transmission on TTL devices...
Digital Sinusoidal Signal Synthesizer with the 4018 (CB4629E)
The 5 outputs of the internal 4018 integrated flop flops can be used simultaneously for the...