Burglar Alarm (CB6443E)

This circuit is from a 1991 Hobbyst Handbok. The circuit uses a small 6V secondary transformer to operate on a miniature xenon lamp inverter.

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Target Shooting (CB18207E)
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Thermocouple amplifier (CB3938E)
We found this circuit in an old publication dealing with operational amplifiers. The circuit uses...
Thyratron Replacement (CB6560E)
Suggested by General Electric in a 1967 documentation, this circuit replaces the Thryraton tubes used at...