lighting governor using 555 timer ic
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Motor speed controller
During summer nights, the temperature is initially quite high. As time passes, the temperature starts dropping. Also, after a person falls asleep, the metabolic rate of one's body decreases. Thus, initially the fan/cooler needs to be run at full speed....
28 LED Clock Timer
Twelve LEDs can be arranged in a circle to represent the twelve hours of a clock face, while an additional twelve LEDs can be arranged in an outer circle to indicate five-minute intervals within the hour. Four additional LEDs are...
A 555 four-base integrated circuit delay circuits
A 555 four-base integrated circuit delay circuit is designed to facilitate a transition from high to low output. When the button SB is pressed, the output is set to high, and after a specified delay, the output transitions to a...
Brakelight Stop flasher
This is basically a flasher circuit modified to turn on and off a bulb instead of a LED. It uses a 555 timer IC working as an astable multivibrator. The flashing rate can be varied from very fast to a...
Lamp Dimmer / Motor Speed Control
The diac is a common component used to trigger triacs. The construction of a diac is similar to that with a transistor, but with both junctions doped to similar levels so that the two junctions' reverse breakdown characteristics are similar....
Scrchaser
Each lamp lights in succession to give the appearance of a growing column.
The described circuit features a sequential lighting system designed to illuminate a series of lamps in a cascading manner, creating the visual effect of a growing column of...
led traffic lights
The LED traffic light circuit manages six LEDs (red, yellow, and green) for both north/south and east/west traffic directions. The timing sequence is produced using a CMOS 4017 decade counter in conjunction with a 555 timer. Outputs 1 through 4...
LED dimmer circuit
Typical segment display LEDs consume around 25 mA for each segment and should be limited to this current with resistors. For a six-digit display to be current limited, at least 42 series resistors are needed. The brightness of the LEDs...
flashingLEDs
Several individuals have requested clarification on calculating resistor values for a triac circuit. This information may be beneficial for adapting the Sous Vader for custom builds. The circuit in question involves the resistor values R1 and R2 in an optoisolator,...