Automatic lamp control (CB6847E)

Found in Radio Electronics, this circuit is intended to activate the lighting system of garages driven by the car's headlight.

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3-State Tone Generator (CB18648E)
This circuit generates some very interesting tone forms having been found in an American...
13 V x 2 A power supply (CB8134E)
Found in a PE Hobbyst in 1991, this 13.6 V power supply with a 2 A current is suitable for supply...
5 V x 10 A Regulator (CB19129E)
We found this voltage regulator for 5 V with current up to 10 A in an old manual of integrated circuits....