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Mobile Scanner Circuit

D Mohankumar - 02/08/10

Here is a device to locate the mobile phone. It emits intermittent flashes and beeps to indicate the [...]

S-Video to RCA Cable Adapter

P. Marian - 01/31/10

The SVideo to RCA cable is sometime hard to find and the adapter is almost every time too [...]
555 1Hz pulse generator circuit

1 Hz Pulse Frequency Generator with 555

D Mohankumar - 01/24/10

Here is a 1Hz pulse/frequency generator using the popular timer IC 555 which is wired as an Astable [...]
cb fm 27mhz receiver circuit diagram

27MHz CB Receiver Circuit

Received by Email - 01/12/10

This is a simple 27MHz FM-CB receiver circuit built with TCA440 for listening CB ( citizen's band ) [...]
pocket fm receiver circuit diagram

Simple FM Receiver Circuit

P. Marian - 01/12/10

This is the most simple fm receiver with good performances that works great even if the sensitivity is [...]
wien bridge oscillator circuit diagram

Wien Bridge Oscillator Circuit

Received by Email - 01/11/10

THis Wien bridge oscillator is very simple and as every wien oscillator has low distorsion and the resonance [...]

TV Antenna Amplifier Circuit

P. Marian - 01/10/10

A very simple and cheap tv antenna amplifier circuit built with BF961 a N–Channel Dual Gate MOS common [...]

Crystal Oscillator Circuit

P. Marian - 01/06/10

Another great crystal oscillator circuit with BB139, a 2-nd harmonic quartz crystal and one BF214 transistor. So, the [...]

Wireless Headphones Transmitter Circuit

Received by Email - 01/03/10

This wireless headphones transmitter assures a quality reception over 2 meters. The oscillator frequency is between 1750KHz and [...]

FM Module with USB Function

P. Marian - 12/29/09

The FM module with USB function of Vire Silicon.Co Ltd is an excellent miniature FM module with USB [...]

2.4GHz Coaxial Antenna Design

P. Marian - 12/28/09

Some points about 2.4Ghz coaxial cable antenna for routers and Robotics Vehicles: Radio equipment using the license-free 2.4-GHz [...]
max2606 fm trasmitter

MAX2606 VHF FM Transmitter

Received by Email - 12/27/09

If you want to be independent of the local radio stations for testing VHF receivers, you need a [...]
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