Owner: Electronic Circuits URL:http://iloveelectronic.blogspot.com/ Join Date: Fri, 31 Oct 2008 10:07:18 -0500 Rating:0 Site Description: Cool Electronic Circuits Collection Site statistics:Click here
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100W Transistor Based Audio Amplifier 2008-10-05 02:27:01 This electronic circuit is an exceptionally well designed amplifier, with a lot of power reserve, high fidelity, low distortion, good S/N ratio, high sensitivity, low consumption and full protection. Having all these almost ideal characteristics this amplifier is likely to become the basic building block of your future high fidelity system, or it can also become the element that will upgrade your Read more:Amplifier
, Audio
Ultrasonic Parking Sonar 2008-10-05 02:25:29 This circuit electronic is an ultrasonic parking sonar. Based on an ultrasonic amplifier from an article seen on a 1982 magazine, it was once installed on the rear bumper of my Volvo Station Wagon. It served very well for many years. Connecting it to the reverse gear lights, it switches on automatically and shows you the distance to the nearest obstacle (according to his beam) on a led scale. When Read more:Parking
, Sonar
PIC Countdown Timer 2008-10-05 02:25:07 The purpose of this timer is to provide a countdown time from 1 second to 99 minutes & 59 seconds. I use it to control the lighting for the Ultra-Violet exposure of photosensitive PCB material. The project provides also an audible alarm at the end of the countdown time and switches the UV lights by means of a relay. It is based on a Microchip microcontroller, the 18 pin PIC16F84(A). This micro Read more:Countdown
, Timer
3 Digit Frequency Meter for SwissFlow Flowsensor 2008-10-05 02:24:43 This electronic circuit is ment to digitally display the output of my electronic Swissflow SF800 flow sensor. This sensor puts out an open collector square wave signal (like a fan RPM monitoring signal) between 50Hz (=0.5 liter/minute) and 2000Hz (=20 liter/minute). By dividing the measured frequency by 10 and putting the decimal point at the right place you get directly a display in liter/minute. Read more:Frequency
, Meter
USB Audio D/A Converter 2008-10-05 02:24:21 This electronic circuit is an high quality preamplifier with built-in DAC from SPDIF or USB for my power amplifier Leachamp. I had available circuit PCM2902. I tried to design DAC from USB with this circuit on one-sided PCB and I was succesful.
Schematics is from datasheet of PCM2902. Circuit includes DAC and ADC, SPDIF output and input and HID part with 3 buttons for MUTE, VOL+ and VOL-. I used Read more:Audio
A Tiny pH-Meter 2008-10-05 02:22:25 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 webpage about this, so let's try to do it right and Read more:Meter
AC Ohmmeter - ESR Meter 2008-10-05 02:21:50 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 state of dryness. Capacitor termination problems al
Water Level Indicator 2008-10-05 02:21:23 This electronic circuit is a water level Indicator
. It is simple and practical measure and know the level of reservoir. The component IC CMOS 4066 used as switcher on any level detector/sensor that connect the negative polarity pin of each LED to ground. Buzzer will be sounded if full level sensor achieved. It's a cool electronic circuit.
Features:
Power Supply 6 - 15 volts
Measuring four differ
20 Watt Automotive Power Amplifier - LM2005 2008-10-05 02:20:29 The high current capability of the LM2005 allows it to continuously endure either AC or DC short circuit of the output with a maximum supply voltage of 16V. This will protect the
loudspeaker in a bridge mode, when a DC short of the output occurs on one side of the speaker. The device will prevent the speaker from destruction by reducing the DC across the load (bridge mode) to typically less than 2 Read more:Amplifier
, Automotive
, Power Amplifier
Car Parking Sensor 2008-10-05 02:20:02 This circuit was designed as an aid in parking the car near the garage wall when backing up. LED D7 illuminates when bumper-wall distance is about 20 cm., D7+D6 illuminate at about 10 cm. and D7+D6+D5 at about 6 cm. In this manner you are alerted when approaching too close to the wall.
All distances mentioned before can vary, depending on infra-red transmitting and receiving LEDs used and are mos Read more:Parking
, Sensor
Oxygen Sensor Simulator 2008-10-05 02:19:31 This oxygen Sensor
simulator is built from a 555 and few other common parts. Just when I thought I'd seen all the uses for the 555. The oxygen sensor on a cars exhaust is used to determine how efficiently the fuel mixture is to an engine.
The oxygen sensor simulator as built on a protoboard. Note the cigarette lighter plug used for power source. The adjustment knob is at the left, and the switch Read more:Oxygen
, Simulator
Privacy Policy 2008-06-10 07:21:07 Privacy Policy
for Electronic CircuitsIf you require any more information or have any questions about our privacy policy, please feel free to contact us by email at ecircuits@telkom.net.At Electronic Circuits Blog, the privacy of our visitors is of extreme importance to us. This privacy policy document outlines the types of personal information is received and collected by Electronic Circuits Blog Read more:Privacy
, Privacy Policy
Radio Wave Alarm 4093 CMOS IC 2008-10-31 00:34:57 This very simple alarm circuit is sure to have the police beating a path to your door - however, it has the added advantage of alerting you to their presence even before their footsteps fall on the doormat.
The alarm circuit transmits on MW (Medium Wave) (this is the small problem with the police). IC1a, together with a sensor (try a 20cm x 20cm sheet of tin foil) oscillates at just over 1MHz. T Read more:Radio
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