This amplifier may also be suitable for other computer games machines, although the audio-video connectors will be different. You will have to work out the necessary connections yourself.
Published: August 17th, 2008
This idea is used in old days. Old engineers could not get the good audio transistors. Therefore , they tried to construct an audio power amplifier with a chap switching transistor.
Published: August 13th, 2008
Many times we needed to strengthen a small signal in the region of VHF or FM. The preamplifier that to you we propose offers 20dB in all the region of VHF and it still can reach also their 500MHZ.
Published: August 13th, 2008
The main difference between single-end and push-pull, is distortion. In fact, SE produce a lot of harmonics, so a lot of distortion. Beside this is a bad idea for a power amp, this is really what a lot of people call a real tube sound.
Published: August 13th, 2008
Here is a fairly simple regulated power supply circuit using a zener reference and a series pass transistor that I built to power a vacuum tube microphone preamp project. It\'s not really something that I designed. It\'s just based on text book examples, some existing circuit designs, some tinkering on my part, and a lot of help from friends.
Published: August 13th, 2008
This project is a small, 3 white LED flashlight. It can provide a conservative minimum of 60 hours of usable light.
Published: August 13th, 2008
This page features H-Bridge circuits used for controlling direct current motors. Several designs are shown using both CMOS and Bi-Polar power devices.
Published: August 10th, 2008
I finally got some small 433MHz radio transmitters and receivers and I needed an encoder/decoder circuit to make use of them for controlling equipment remotely. One could realize this by using Motorola MC145026-8 integrated circuits as well, but they need space and a few external components that must be calibrated by the user.
Published: August 10th, 2008
This is a circuit that will give an audible warning that a train is entering a particular section of track. The detector also has a LED that indicates when a train is entering or leaving the block.
Published: August 7th, 2008
The mechanism is driven by a geared slow speed motor and controlled by an electronic timer circuit. The car waits for a preset time at the top and bottom of the incline before being slowly lowered down or pulled up the track.
Published: August 7th, 2008
There are power supplies with greater current capacities on the same Digi-Key catalog page as those shown above. These should be avoided as they have a negative terminal that is connected to earth through the grounded, three prong plug. This could cause isolation problems between various parts of a layout and could cause short circuits or ground loops.
Published: August 7th, 2008
Class D amplifiers are much more efficient than other classical amplifiers, but their high efficiency comes at the expense of increased noise and distortion. You can assess the frequency- and time-domain characteristics of a Class D amplifier, including the output filter, using online simulations.
Published: July 29th, 2008
You needn\'t look further than Class D audio amplifiers to find a technology whose proponents tend toward exuberant advocacy at best and bald-faced hype at worst. Although these ICs are not yet the be all and end all of audio amplification that their makers would have you believe, they are remarkably good-certainly more listenable than the clamor about them.
Published: July 29th, 2008
Most audio outputs have some standing DC voltage which is separated by a capacitor. The capacitor will block this DC voltage while allowing the AC or audio to pass. Audio components using transformer coupling are not affected.
Published: July 29th, 2008
The P3A amplifier has proven extremely popular, and the DoZ continues to provide enthusiasts with a simple, reliable and easy to build Class-A amplifier.
Published: July 26th, 2008
This relatively simple mixer was designed for three dynamic microphones, but can be re-designed for more or less. Level and tone controls are available to tailor the sound to your needs.
Published: July 26th, 2008
The polarity markings on LEDs (Light Emitting Diodes) seem to be a common cause of confusion. The polarity may be indicated by a flat section on one side of the body or by one lead being shorter than the other, but different manufacturers are not consistent as to which lead they are marking.
Published: July 26th, 2008
First Steps -- The basic idea was already in our heads as to how this thing would work. We would make some bell-like things, each one would get struck with a solenoid, and making it all go would be a little microcontroller that would watch for the doorbell button to be pressed and then play one of several tunes.
Published: July 26th, 2008
When showing my first DIY headphone amplifier to a friend of mine, who happens to be an engineer, the result was very unsettling frown.
Published: July 26th, 2008
Followed your recipe of mods on my 69 YBA-1 and single channeled it by lifting a 100k resistor, changed the common cathode resistor to 1.5k and tried lowering the capacitance there from 100uFd but the amp wanted to regenerate at high gain settings, so I put back the 100u cap.
Published: July 26th, 2008