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LED and light circuit diagrams
December 28, 2010
The full wave phase control circuit below was found in a RCA power circuits book from 1969. The load is placed in series with the AC line and the four diodes provide a full wave... [more]
December 28, 2010
The sunset lamp comes on at full brightness and then slowly fades out over 1.5 hours time and stays off until power is recycled. [more]
December 28, 2010
In this circuit, a 120VAC lamp is slowly illuminated over a approximate 20 minute period. The bridge rectifier supplies 120 DC to the MOSFET and 60 watt lamp. A 6.2K, 5 watt resistor and zener... [more]
December 27, 2010
Here is a 12 volt / 2 amp lamp dimmer that can be used to dim a standard 25 watt automobile brake or backup bulb by controlling the duty cycle of a astable 555 timer... [more]
December 27, 2010
In this circuit, one, two or three neon indicator bulbs can be made to flash in sequence at rates determined by the R and C values. In the single stage circuit, using one lamp, the... [more]
December 11, 2010
This circuit is intended as a reliable replacement to thermally-activated switches used for Christmas tree lamp-flashing. [more]
November 26, 2010
This circuit should only be used with the solenoid type chime doorbells, the electronic type that play tunes will not work here. [more]
November 19, 2010
This circuit operates two LED strips in pulsing mode, i.e. one LED strip goes from off state, lights up gradually, then dims gradually, etc. while the other LED strip do the contrary. [more]
November 11, 2010
This circuit is intended to let the user turn off a lamp by means of a switch placed far from bed, allowing him enough time to lie down before the lamp really switches off. Obviously,... [more]
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