To order boards, click to go to the ESP Purchase form. Verify the price and postage, then open the order form, fill it in and print it from your browser. Boards are sold only as a stereo pair, and are supplied with component overlay, circuit diagram, bill of materials and assembly and test instructions. These instructions are as an HTML file on fl
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oppy disk. Complete kits for this amplifier are available now from the Printed Electronics web site. For those who do not want to have to scrounge all the component suppliers to get the parts, this is definitely the way to go. Details and all pricing are available from Printed Electronics as these may change over time I shall not reproduce them here. According to the latest information on the Printed Electronics web site, the amp has been downgraded to 55W, which is still more than enough power for all but the most inefficient loudspeakers. The maximum recommended supply voltage is +/-35V, and it is recommended that this is not exceeded (the amp was previously stated to use a +/-42V supply voltage). The drawings below have been duly amended to reflect this change. It was developed to overcome most of the sonic problems of transistor amplifiers, and incorporates some highly innovative thinking from an experienced designer. It delivers stunning resolution and a pure, sweet sound at very low cost. Both channels are assembled on their own individual 86mm x 75mm boards and mounted on a single 300 x 75 mm ledged heatsink. It is powered from a 35 volt positive and negative supply, and runs very efficiently in Class AB. Features of this amplifier are its lack of intermodulation and depth of stereo image, unusual for a solid state amplifier. To achieve the best performance, a dual mono power supply is required a schematic is...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
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In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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