Strobe Stroboscope
No description available.
LED operates as light sensor
A simple 741 amplifier is utilized as a current-to-voltage converter, with an LED serving as the current source. The output voltage is proportional to the incident light. The junction is biased solely by the difference between the output summing node...
How Do LED light bulbs works on Mobile Phone Circuit
An LED (light-emitting diode) is utilized to illuminate keypad keys and LCD screen displays on all mobile phone handsets. It is controlled by the voltage or current drawn at its terminals. In the schematic diagram, the LEDs are driven by...
Switching intensity of LEDs
A circuit has been constructed that functions unexpectedly. The circuit utilizes red 5mm LEDs as diodes, a 3904 NPN transistor, and resistors as indicated in the schematic. Logically, pressing the push button normally open (PBNO) should result in the destruction...
Ultra Bright LED Lamp
This ultra-bright white LED lamp operates on 230V AC with minimal power consumption. It is suitable for illuminating VU meters, SWR meters, and similar applications. The cost of ultra-bright LEDs available in the market ranges from Rs 8 to 15....
LED Chaser circuit
This schematic represents a version of a simple LED chaser. A 555 timer is not utilized due to its high cost at local electronics stores, which is over $4 CAD. Instead, an oscillator is constructed using two sections of a...
led flasher circuit schematic inside
Build a circuit that will flash five pairs of LEDs at variable rates. To achieve this, a circuit utilizing five NE555 timers has been designed. Trim pots will be used to control the variable flash rate. Assistance is needed in...
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...
Constant LED power circuit
An LED is usually a series resistor needed to ensure that the LED does not get too much power. The disadvantage of such resistance is that the current through the LED and thus the brightness changes as the voltage changes....
Pocket white-LED torch is power efficient
This single white LED torch can be housed in an empty glue stick tube and has a long rechargeable battery life.
The proposed circuit design features a compact LED torch that utilizes a single white LED as the primary light source....