This project is related to the other tube amplifier projects I have posted. It has more than a casual similarity to the first Push-Pull EL84 (6BQ5) Oddwatt project from nearly two years ago. Both tube amplifier projects use EL84 / 6BQ5 tubes and the earlier....

A couple of years ago I decided I would (eventually) need to replace my decades-old Nakamichi stereo with something more suited to a mobile lifestyle. It was immediately pretty obvious that the Class-D and E switching amplifiers I had researched in the `70s....

Simple interconnection of RS7490 decade counter RS7447 decoder, and 7-segment digital display for each desired digit makes ideal counter for classroom demonstrations and Sci-ence Fair exhibits, With two additional stages added, display reaches 9999 before....

This is a flash triggered (photo-driven) circuit which produce a pulse with constant predetermined wide. This circuit can be used to control any device which....

For one of my classes each student had to pick one of three technology platforms to design, simulate, prototype and then build (PCB layout, ordering, etc) all within ten weeks.  The platforms were: H-bridge Motor Controller, Infrared Proximity Sensor and....

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The circuit was designed to produce a preamplifier with symmetrical audio input while the output operates in Class A type. Preamplifier (pre-amp) a devi....

Depending on its design an electric guitar may have anything from one to six pickup elements. Classic (acoustic) guitars could also benefit from one or mo....

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The Echorec delay is a superb piece of engineering! In their quest for perfection Binson got many important aspects of the design right, maintaining a balance between simplicity and adding genuinely useful features to this classic echo machine. The engineers....

Circuit schematic for the classic PIC serial programming cable. There is also a high resolution version of the image, and a Scalable Vector Graphics source file for printing. Please note that the SVG file might not display properly in some browsers.....

As mentioned earlier, Arduino consists of two major parts: the hardware (the Arduino board) and the Software (the IDE). The advantage of using the Arduino is that we can build a circuit and then modify how it responds by changing the code (instead of....

The fundamentals of crystals has not changed since this article appeared in a 1960 edition of Popular Electronics. The way they are grown, cut, and packaged has changed fairly significantly. An understanding of how they work at the atomic level has advanced....

The PZP-1 Piezo Buffer is now available! The PZP-1 is a high impedance buffer preamp, using 100% discrete class-A circuitry. Designed expressly for the Fender Precision acoustic/electric and HMT basses, it can also help other instruments with piezoelectric....

The ATR0981 is a monolithic IC manufactured using Atmels advanced SiGe technol ogy. The IC performs a transmit and receive front-end function, dedicated for a frequency range of 300 MHz to 500 MHz. It consists of a Low-Noise Amplifier (LNA) and a Power....

TDA 2030 is produced by SGS Ates and is a complete audio amplifier. Class AB amplifier to deliver final cand 14 watts into 4 ohms, a source of +-14V power. Connecting two TDA2030 through cheap power transistors that can create an amplifier that can deliver a....

The TPA2011D1 is a 3. 2-W high efficiency filter-free class-D Audio Power Amplifier (class-D amp) in a 1, 21 mm G— 1, 16 mm wafer chip scale package (WCSP) that requires only three external components. The TPA2011D1 is a 3. 2-W high efficiency filter-free....

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This is an article about my new PCB design for CMoy headphone amplifier. Main feature is that the new PCB fits exactly to the classic Altoids tin-can. This new CMoy incorporates moreover bass-boost circuit and constant current charger for 9V battery. P1 is....

It`s based on a Philips class-H audio amplifier IC and can deliver 36W RMS OR 70W music power, all from a 13.8V supply. Our new Mighty Midget Amplifier can really pack a punch - around 36W RMS continuous into a 4-ohm load when using a 13.8V supply. However,....

Laser Command is a game which I build using a 8x8 matrix LED and an Arduino Mini. This game was developed as a "sample" class project in S10-05833 Gadgets, Sensors and Activity Recognition in HCI. The class is taught by Scott Hudson at Carnegie Mellon....

The MSK4204RH is a radiation hardened complete H-Bridge microcircuit intended for use in DC brushed Motor Control applications or Class D switchmode amplification in space or other severe operating environments. The internal compo- nents have been selected....

The driver stage works in the same manner as the class A output stage described previously. However it is only working at a couple of milliamps, so efficiency is not an issue here. The biasing arrangement should be familiar by now. Some sets, including the....

The Visual Target Tracking System (VTTS) is a system for visually tracking targets using a gimbal mounted camera and digital control circuitry. A small black and white camera is mounted on a stand that can be moved with two directions of freedom. When an....

2x22 W car audio amplifier circuit uses TDA1558, a monolithic integrated class-B Output power amplifier contains 4x11W single-ended or 2 x 22 W BTL amplifiers..

On this page we will discuss the power electronics needed for our EDM machine. The basic mechanism of electrical discharge machining is a controlled spark between the electrode and the workpiece. This part of the electronic design generates the waveforms....

Here is a circuit diagram of car stereo. Below is a circuit diagram of class B 15 Watts audio amplifier is designed using a dual op-amp and transistor. The 15 W class B audio amplifier circuit shown here is a simple class B audio amplifier based onLM833 op. ..

It is a very useful thing , to have a small headphone amplifier , capable of driving a couple of pairs phones. Fortunately, the headphone amp has a much easier job to do, in that neither the output power requirements nor the load characteristics are so....

Used in recording signals from active sonar on magnetic tape, for later playback to control land-based sonar used in training operators. Modulator is basically sawtooth generator whose repetition frequency is changed by amplitude of modulating input signal.....

This power supply electronic circuit is a high current 5 volts power supply circuit that use a 7805 voltage regulator and some classic electronic components. T1 acts as a current limiter. Once the voltage on R2 + R3 is greater than 0. 6 0. 7 V, the....

As I often drive on motorways, I always and frequently use the direction indicators in order to show the lane change. I normally did this by holding a ....

This audio amplifier circuit delivers up to 200 W of top-class quality for loudspeaker from 4 to 16 ohm. Operating voltage is between 24 and 36 V, max 5 A ..