led Problem with microphone powering up a comparator circuit
#comparator
#microphone
#LED
#audio signal
#power supply
#op-amp
#circuit design
#signal processing
#electrical noise
#feedback
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led chaser pwm
This compact circuit operates 8 LEDs directly driven from a PIC microcontroller, accompanied by a single mode control switch. The firmware controls the LEDs using a 5-bit PWM signal, enabling four levels of intensity for each LED channel: off, dim,...
Microphone pre-amp
Cleaned Input:
Description: This circuit is used to give out a microphone preamp to an amplifier which will power the signal. The NPN transistors used are ECG123A. This circuit is also an older model to the one that now uses...
led light flasher
When the preset is set to its maximum, the LED flashes approximately every half second. This flashing rate can be increased by using a larger capacitor value, for instance, changing from 10µF to 22µF will result in a flashing rate...
led torch uses blocking
This simple LED torch is powered by a 2-transistor blocking oscillator that increases the voltage from a 1.5V cell. The design utilizes the natural current limiting characteristics of a 150 µH choke to prevent the white LED from being overdriven....
1.5 Volt LED Flasher Circuits
The LED flasher circuits below operate on a single 1.5 volt battery. The circuit on the upper right uses the popular LM3909 LED flasher IC and requires only a timing capacitor and LED. The top left circuit, designed by Andre...
Emergency warning light LED alarm
The emergency driver unit includes a battery charger and electronic circuitry housed in a compact case. It features battery protection for emergency lighting against overcurrent and heat. Additionally, it has protection for the liquid crystal display (LCD) screen against short...
LED driven tail/brake Light Cluster
This circuit was designed on request to drive a Light-cluster formed by several LEDs that can be mounted in the vehicle as a tail and brake light. When SW1 is on, the cluster will illuminate at medium brightness. When brakes...
LED-Microscope
This instruction outlines the process of converting a standard microscope that uses a light bulb to LED illumination. A mobile phone charger can be utilized as the power supply due to the significantly lower power consumption of LEDs. This eliminates...
Sony KV-S29MHl TV switching power supply (SIR a 80145A) circuit diagram
The circuit of the Sony KV-S29MHl (S Movement series) TV switching power supply (SIR a 80145A) consists of three main sections: (A) the power oscillation part, (B) the regulator part, and (C) the output section.
The Sony KV-S29MHl TV switching power...