Multi-pulse trigger (CB21477E)

This circuit was found in a 1967 EEE. The transistors are from the time and can be tested equivalent.

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Battery Charger (CB4388E)
This circuit, obtained from a 1965 magazine, can still be assembled using some modern equivalent...
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40W Voltage Inverter (CB25375E)
This powerful inverter provides a high-quality sine wave signal. I found it in a Radio Electronics issue...