6 V Assisted Ignition (CB14813E)

This circuit, for vehicles with a 6 V battery, was found in the 1964 RCA transistors manual. Transistor 2N3054 can be replaced by a TIP41.

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50 mA Battery Charger (CB878E)
This simple circuit is designed to charger AA or AAA Nicad batteries. Current can be changed...
Band Pass Filter (CB15477E)
The circuit shown in the figure is suggested by Texas Instruments in its Linear Circuits...
Touch Timer (CB17222E)
A touch of a sensor triggers this minute for a time determined by R4 and C3. Times can be between a...