Brightness controller circuit diagram for your car
#brightness control
#car electronics
#LED
#dimmer circuit
#voltage regulator
#lighting
#dashboard lights
#PWM control
#12V circuit
#interior lighting
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Regulator Circuit
The unique feature of this regulator is that the output voltage can be adjusted down to 0 V. The regulation is provided by an integrated regulator type LM317. Typically, in supplies that can be adjusted to 0 V, this IC...
LED ramping circuit
In this circuit, the intensity of the LED varies in a ramping fashion. The circuit comprises three integrated circuits: two 555 timer ICs and one LM393 operational amplifier. IC1 and IC2 are configured as oscillators to generate frequencies of 10...
LED Series Resistor Calculator
All LEDs require some form of current limiting. Connecting an LED directly to the power supply will burn it out almost instantly. Overdriving, even briefly, will significantly reduce its lifespan and light output. Fortunately, driving a single or a string...
Bicycle Back Safety Light Circuit
This circuit has been designed to provide a clearly visible light, formed by 13 high-efficiency flashing LEDs arranged in a pseudo-rotating order. Due to low voltage, low drain battery operation, and small size, the device is suitable for mounting on...
Audio 10 LED VU meter
The circuit was designed to work with an audio power amplifier which operated off +18v-0v-18v power rails. The actual voltage used is not too critical except that the feedback is referred to the LED chain which itself is anchored to...
Emergency LED Light LED-716 Emergency Light Schematic
This circuit illustrates the modifications made due to a blown resistor on the backside, which was soldered in place. The issue was traced back to this specific resistor. Currently, the pattern change switch is set to Option 3, which corresponds...
Free homemade LED lamp circuit diagram
Also known as the Free lamp (commonly referred to as the Myanmar lamp by online sellers), this device operates using the voltage from a standard household fixed telephone line, eliminating the need for batteries or AC power. The lamp connects...
LED VU Meter with LM3914N
The circuit utilizes an LM3914N bar graph display driver (IC1) to control up to ten LEDs. It is configured such that when 0V is applied to the input, only the first LED indicator lights up. This straightforward peak reading VU...
White LED Head Lamp
This is a practical white LED head mount lamp (flashlight). Recently many white LED flashlights appear on the market. However, most flashlights require three cells because they are regulating output current with only series resistor. The odd number of cells...