Quality Audio FM transmitter Circuit This house FM transmitter for your stereo or any other amplifier provides a good signal strength up t...
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Solar Charger with Current Regulation & Cut-Off
Solar Charger with Current Regulation & Cut-Off Here is a solar charger circuit that is used to charge Lead Acid or Ni-Cd batteries usi...
30V 1A Transformerless Power Supply
This transformerless power supply circuit is designed for medium current applications. During the negative half period, the capacitor C5 is...
TransformerLess Power Supply 12V 100mA
This is a transformerless power supply for low current applications. C1 is the X rated AC capacitor that reduces high volt AC. D1-D4 rectif...
SuperFast Rechargable Battery
SuperFast Rechargable Battery Using GoldCap Capacitors When compared to conventional disposable or rechargeable batteries, GoldCap capacito...
1.5 Watt 1-2 km Range FM Transmitter
Here is a well designed FM transmitter circuit that works effectively in 1 – 2 km range. Input source is an electret condenser microphone...
FM Telephone Transmitter
"Telephone Transmitter, FM." "Receive telephone conversations on any FM radio with this neat little device." ...
2 Watt FM Transmitter
CIRCUIT DESCRIPTION The circuit is basically a radio frequency (RF) oscillator that operates around 100 MHz. Audio picked up and amplified b...
SpeakerBox Filter Designer
SpeakerBox Filter Designer is a simple and useful software for calculate the first and second order passive audio filter for 2 way and ...
Portable FM Radio
The KA22429 is a monolithic integrated circuit designed for Portable FM radio r eceiver. It is consistng of RF input stage, Mixer, IF, Mut...
USB Powered Audio Amplifier for PC
This audio power amplifier might be good solution to all of those who have PC with integrated sound card into motherboard. The main problem...
FM Transmitter 4Watt
TECHNICAL CHARACTERISTICS: Stabilised tendency of catering: Vcc=12~16V Frequency of emission: 88~108MHz Consumption: 100~400mA Circu...
3 LED Battery Monitor
Monitor the voltage level of an automobile battery using 3 LED battery monitor circuit
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The explained circuit in this article is probably the simplest and the cheapest, since it employs minimum number of components and the m...
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The ZN414 is a low cost, single-chip AM radio integrated circuit. Launched in 1972, the part was designed and supplied by Ferranti. The ZN...
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It is a very simply 220 V or 110 V operated 1 watt LED driver circuit, that would cost you not more 1/2 a dollar, excluding the LED o...
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Graphic Equalisers are a must in any good hi-fi systems! They enable you to shape the response of the system to the particular room, ...
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Here's PLL FM transmitter circuit from china. This circuit uses the familiar 2SC1971 for final power amplifier stage. Click ima...
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