lighting up model aircraft
#model aircraft
#LED
#lighting circuit
#hobby electronics
#DIY lighting
#decorative lighting
#low voltage
#battery powered
#aviation
#custom lighting
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9 LED VU meter
This simple and easy to make circuit is a 5 LED VU Meter based on LB1409 IC from SANYO, which will indicates the volume level of the audio signal it senses. SUPPLY 12V DC @ 50mA. PR1 REF SET. PR2...
LED digital clock language timekeeping circuit
The General Dynamic LED digital clock lacks a timekeeping function, but by adding a simple circuit, it can incorporate this feature. The integrated circuit (IC) includes a programmable mute function, which is inactive from 23:00 to 5:00 to avoid disturbing...
Knightrider lights for model cars circuit
This simple circuit drives six LEDs in a "Knightrider scanner mode." Power consumption primarily depends on the type of LEDs used, particularly when utilizing a 7555 (the CMOS version of the 555 timer).
The circuit is designed to create a visual...
The power indicator circuit
The ACER PM02 MP4 machine features a voltage status indicator circuit. When power is supplied, a red LED illuminates, indicating that the device is powered on. Upon entering operational mode, a green LED lights up.
The voltage status indicator circuit serves...
A Very Simple LED Tester
This simple LED tester consists of a current source with a potentiometer that can be used to adjust the current. The current source is implemented using a TL081 operational amplifier. The output current from the op-amp flows through the diode...
LED VU Meter with LM3914N
The circuit is based on an LM3914N bar graph display driver device (IC1), which can be used to drive up to ten LEDs. This is connected so that with OV12 at the input only the first LED indicator switches on....
Wheel Of Fortune
This circuit is a 10-LED spinning wheel that "clicks" as the wheel passes each point. The rotation starts fast, then gradually slows down to a random stop (with a click at each position). After the rotation ceases, the selected LED...
LED linear modulator
After constructing a Pulse Width Modulator for high-power LEDs, another LED modulator was developed for an optical transceiver. This project utilized a different approach, focusing solely on linear techniques for audio modulation. Similar to the PWM circuit, this circuit employs...
Run through the display circuit equipment Chengdu
Color light-emitting diodes with different colors can indicate the operational status of electrical equipment, as illustrated in the accompanying figure. The red light-emitting diode (LED) R emits red light when energized, indicating that the 220V power supply is functioning normally....