Sawtooth wave oscillator
The figure on the left shows the case that the A point is positive voltage.
When the A point is positive voltage, the electric current flows to the capacitor(C) through D1 and R1. When the value of R2 is small compared with...
Rabu, 21 November 2012
wave oscillator

In this page, I introduce the sawtooth wave oscillator which used the operational amplifier (TL082).
The composition of this circuit is the same as the triangular wave oscillator basically and is using two operational amplifiers. At the circuit...
Large Scale Integration

Levels of Integration
ICs are categorized according to their circuit complexity which can be measured by the number of electronic components contained in the package. The process of integration can be classified as small, medium, large, very large,...
LM386

This is the low frequency power amplifier of which the penumbra article can be composed without using it hardly.
The about 660-mW output can be gotten with the 16-ohm speaker.
This circuit is used for the simple monitor and so on.
The impedance...
voltage
This circuit is used when delaying the standing-up of the square wave signal.
Also, in the case having to do with the pulse of the input signal, it uses for the circuit as it changes the output voltage gradually by the occurrence frequency of the pulse,...
Voltage change circuit

This circuit is used when getting the signal having to do with the pulse from the input signal of the square wave.
The circuit of this form is used to interrupt the relation having to do with the direct current among the circuits, too.(Direct...
Tunnel Diode

A diode is an electronic device having two electrodes; one of which is positive (called the anode) and the other is negative (called the cathode). The node at which these two electrodes meet is called the P-N Junction. Because of having only a single...
Senin, 19 November 2012
Power amplifiers

Amplifier power circuit from the beginning until now not much changed. Some say this is good circuit, the circuit is good but fitting assembled
and tested the result was not as we expected. The problem there is usually
treble is less smooth, less noise...
Subwoofer

Simple and low cost. The optimal accumulation voltage is about 50V, but this amp assignment from 30 to 60V. The acute ascribe voltage is about 0.8 – 1V. As you can see, in this architecture the apparatus accept a big tolerance, so you can body it...
Minggu, 04 November 2012
A63 voice recording

Looking to add a custom sound, melody, or message to your next project? The A63 voice recording module offers true single chip solid state storage capability and requires no software or micro-controller support. It provides high quality recording...
STK4432

This complete high quality, low noise stereo audio power amplifier is based around the Hybrid Integrated Circuit STK4432 manufactured by Sanyo. The circuit incorporates volume and balance controls and has a maximum music output power of 55W per channel...
TDA2003

This is a compact, yet powerful audio amplifier using two TDA2003 monolithic Integrated Circuits connected in bridged configuration to achieve more output power at 12V DC supply. It can deliver more than 20W of music power into a 4-Ohm speaker and...
HA 13001 IC

A high quality electronic audio amp that can operate on a low voltage, 12 VDC recommended. Uses the Hitachi HA 13001 IC and a dozen external components for a compact and powerful monaural amplifier. Will drive two 4 or 8 ohm speakers. Two can be used...
TDA2009A

This class AB stereo audio power amplifier is designed for quality hi-fi applications using a TDA2009A module. It is easy to construct and has a minimum of external components. The module has output current and thermal protection. This is the data...
TBA810 Integrated Circuit

This amplifier circuit is a compact design AF amplifier based on the TBA810 Integrated Circuit. Its low consumption and compact dimensions make it ideal for all kinds of audio amplification applications. The circuit incorporates an overload protection...
stereo amplifier module

This is a 1 watt per channel, stereo amplifier module Kit using two LM386N IC’s from National Semiconductor. It is basically two of our CK700’s on a single PC board, with a dual gang pot. It will operate best from 6-12V DC and will work well from...
Stereo Amplifier Kit

6-10 Watt Stereo Amplifier Kit
Kit 143 is a class AB stereo audio power amplifier designed for quality hi-fi applications using a TDA2005 module. It is easy to construct and has a minimum of external components. The module has output current protection...
amplifier designed

This Electronic Kit is an amplifier designed with portability in mind; ideal for battery applications. A full watt from each channel, excellent fidelity. Uses a Samsung KA2209 IC. Small size, circuit board is 1-3/8" x 2". All basic parts supplied,...
Stereo Preamplifier

This Stereo Preamplifier (Kit 100) is based on the TDA1524A IC. It contains all the components to build a tone control & pre-amplifier unit. Signal processing is done in the TDA1524A by voltage controlled amps and filters.
Specifications:
L:...
Radar

Parking Radar Kit
If you have problems parking then this kit is for you. Using (ultrasonic) sound waves, whose frequency is beyond our range of hearing, we can measure a distance. Consequently, a sensor mounted at the back of the car can give an indication...
Transistor Ignition Kit

Electronic Transistor Ignition Kit
Gives your car the feel of an expensive luxury car. Better starting and smoother running, particularly at very high and very low RPM. Lower fuel consumption, less pollution, lower servicing costs. Drive economically,...
Wiper Interval Timer Kit

Windshield Wiper Interval Timer Kit
Up to 3 different time intervals (2 - 10 - 15 seconds) can be selected for the windshield wipers of your car. It can also be used for automatic slide projection.
Specifications:
relays on PCB: 2 inverters
power...
Indicator Kit

Frost Indicator Kit
Drive more safely in freezing weather. This kit uses a flashing LED to indicate a road temperature close to freezing point ; below that point the LED is on continuously. A reliable temperature sensor with mounting stud is included.
Specifications:
power...
Alarm Simulator

Car Alarm Simulator Kit
Want to deter your local thief without spending hundreds on a car security alarm? LED with 'realistic-appearing' flash sequence simulates active car alarm system.
Ingeniously simple circuit can tell if your car is running...
head light indicator

This head light indicator may be set for one or two functions. To indicate that the head lights (or the side lights) should be switched off after switching off the ignition contact (battery protection). Or to indicate that the head lights should be...
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