Intermittent Oscillator or Siren (CB18276E)

The basic siren configuration shown in figure 1 activates a piezoelectric transducer and can be used as an alert or warning device.

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Rectangular Oscillator 4136 (CB14938E)
The operational used in this common configuration is a double 741. The circuit can be used to...
Mixer (CB13030E)
The two-channel mixer shown in the figure is the ideal solution for cases where we need an...
Transistor Timer (CB13971E)
This circuit is from an English publication from 1965. The transistors used are rare, however, they...