Microlights (CB25786E)

With this name the LED effects circuit presented was found in the Electronics Now magazine of December 1994. The circuit is powered by a 9 V battery.

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Fourth Order Butterworth Filter (CB4909E)
This filter was obtained from a Linear Technology manual from the 1990s. The power supply must be...
Video amplifier (CB8743E)
Found in a 90s Popular Electronics, this circuit is intended for amplifying analog video signals....
Voltage Detector for Battery Chargers (CB6061E)
Based on a 555, this 80's American documentation circuit detects the voltage of a battery and can then...