Electronic Schematics On The Net |
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| Country | Indonesia |
| Language | English |
| Owner | esonet@*****.*** |
| Member Since | February 13, 2008 |
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| Tags | electronic | circuit | amplifier | transmitter | audio | antenna | |
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Latest Posts on: Electronic Schematics On The Net
Retrieved latest 5 posts at: http://schematronics.blogspot.com/feeds/posts/default
Stereo Encoder Oversampling For FM Transmitter
Stereo encoder is the circuit that used in FM transmitter audio for a high quality stereo sound transmission. This stereo encoder produces an excellent crystal clear stereo sound and very good channel separation that can match with many more expensive stereo encoders that are available on the market. Below is stereo encoder (stereocoder) from Kat..
Posted on 4 April 2012 | 2:43 am
A Tiny and Accurate pH-meter
This electronic circuit is a tiny pH-meter. It is very tiny: 11cm2 including the PSU circuit! The schematic is shown below. It is basically a simple gain/offset circuit with a high impedance input (several giga-Ohm) and frankly the explanation could stop here: anyone with an background in electronics can understand this. But I started to write a we..
Posted on 27 November 2009 | 7:12 am
ESR Meter
The ESR Meter is basically an AC Ohmmeter with special scales and protective circuitry. It provides a continuous reading of series resistance in electrolytic capacitors. It operates at 100 kHz to keep the capacitive reactance factor near zero. The remaining series resistance is due to the electrolyte between the capacitor plates and indicates the s..
Posted on 27 November 2009 | 7:11 am
Simple Oxygen Sensor Simulator Circuit
This electronic circuit is an oxygen sensor simulator built on a prototype board. Note the cigarette lighter plug used for power source. The adjustment knob is at the left, and the switch is on the right. The red indicator LED is in the middle. Only use red, because the voltage drop of the LED is part of the circuit! The schematic diagram for th..
Posted on 27 November 2009 | 7:11 am
RF Sensing Alarm
RF sensing alarm is a device that would alert when it detects a continuous RF transmission that lasts more than 5 minutes. The device would have to be broadband (HF/VHF/UHF), be sensitive enough to detect a 5W transmission from inside the shack using a telescopic antenna, and produce a sound loud enough to alert me anywhere in the house. The RF se..
Posted on 27 November 2009 | 7:10 am