Led driver using CD4017B circuit
#LED driver
#CD4017B
#decade counter
#lighting control
#sequential lighting
#Johnson counter
#LED chaser
#low power
#CMOS
#visual effects
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Signal injectoh-tracer
The injector is a CMOS oscillator with a period approximately equal to 1 x Cl x R2 seconds. The values are provided for 1 kHz operation. Resistors R3 and R4 divide the output to 1 V. While the oscillator operates...
CMOS Toggle Flip Flop Using Laser Pointer circuit
The IR photo transistor Q1 (Radio Shack 276-145A) or a similar component is connected to the set input (pin 6). It is essential to shield the photo transistor from direct light to ensure that the voltage at the set input...
cmos toggle flip flop using laser pointer
The IR photo transistor Q1 (Radio Shack 276-145A) or a similar component is connected to the set input (pin 6). It is essential to shield the photo transistor from direct light to ensure that the voltage at the set input...
Night security light
This simple circuit is built around a CMOS IC 4060 to obtain the required timing. During daytime, the LDR has low resistance and keeps pin 12 of IC1 high, preventing IC1 from oscillating. When it is dark, the LDR resistance...
LED driver based on MP3302 LED driver IC. Working circuit diagram.Operates from a single Lithium ion battery
The MP3302 is a boost converter integrated circuit (IC) specifically designed for LED drive applications. It is capable of driving 27 LEDs, arranged as 9 strings of 3 white LEDs in series, powered by a lithium-ion battery. The IC features...
Diode feedback comparator
This circuit can drive an LED display with constant current, independent of significant changes in power supply voltage. It can operate with a power supply range of at least 4V to 30V. With 10M resistances for R2 and R3 and...
Power Driver For 20W LED circuit
This lighting solution offers over 90% energy savings compared to incandescent or halogen bulbs, with a lifespan exceeding 50,000 hours. It operates without flickering, making it suitable for human eyes, and produces no RF interference or UV radiation. The design...
Low Power Negative Car Power Supply
I have had a lot of queries about getting a low power negative supply in cars, to power Linkwitz transform circuits and the like. There is a switchmode converter, but I must admit that it is overkill for what most...
Cmos-precision-programmable-laboratory-timer
The time base is initially selected with switch S1 set for either seconds or minutes. Subsequently, values from 0 to 99 are chosen using the two thumbwheel switches S4 and S5. Finally, pressing switch S2 starts the timer. At the...