10-Step Sine Generator (CB24472E)

This CMOS generator with the 4018 IC was found in a November 1976 Radio Electronics magazine. It uses a 741 op-amp as the audio amplifier.

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Function Generator (CB18881E)
The configuration of this function generator is not unusual. Only the adopted symbology is...
High Pass Filter 741 (CB16119E)
This filter operates in the “opposite” way to the previous one (CIR8814), cutting all signals...
Automatic Modulated Siren C (CB15856E)
The same basic audio oscillator as the CIR15855E can be modulated automatically by a relaxation...