Repository-circuits
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This circuit is sensitive to low frequency electromagnetic radiation and will detect for example hidden wiring or the field that encompasses a transformer. Pickup is by a radial type inductor, used as a probe which responds well to low frequency changing.... -
This is a Simple Phono Preamplifier Circuit Diagram. In recent years, following CD`s introduction, vinyl recordings are almost disappeared. Nevertheless, a phono preamplifier is still useful for listening old vinyl discs from a well preserved collection..... -
This solid-state push-pull single-ended Class A circuit is capable of providing a sound comparable to those valve amplifiers, delivering more output power (6. 9W measured across a 8 Ohm loudspeaker cabinet load), less THD, higher input sensitivity and better.... -
This entire circuit of beeper cum visual indicator is build and fabricated around two timer ICs and is configured in an astable multivibrator mode. The frequency generated by IC1 is controlled by capacitor C1. The output from pin 3 of IC1 is given to input.... -
There are several ways to read multiple switch inputs using a reduced number of microcontroller-unit (MCU) pins. For example, you can use an analog MCU pin to read multiple switches by assigning a unique voltage to each switch through a resistor network, or.... -
This small project is a slave flash, which can trigger up to 4 camera flashes (non-TTL mode). It is meant for use with the Nikon CLS system, although it can probably work with other brands as well, as long as the protocol heuristics are similar. The.... -
Included on this page are various small circuits I have created over time. Some are trivial, some are a bit more complex, but hopefully all are useful in a variety of projects. Most include both the schematics as well as the source ( KiCad ) files. This is a.... -
Measurement of physiological parameters like heart rate and respiration rate is crucial in the field of medicine. Here is a simple method for respiration rate measurement using a displacement transducer. Its responds fast and is cost effective. By using.... -
Analysis of simple digital circuits means to determine how the circuit behaves, which is represented for its truth table. So, with this aim in mind, lets organise the analysis step by step (as explained in Unit 1. 3 ) : For instance, here you are the circuit.... -
This Project Automatic Room Light Controller with Bidirectional Visitor Counter using Microcontroller is a reliable circuit that takes over the task of controlling the room lights as well us counting number of persons/ visitors in the room very accurately..... -
So I had a lot of trouble figuring out that the Source pin goes to low voltage (source of electrons) and the Drain pin goes to high voltage (absorbs electrons). Basic electricity, but it still took me a while... -
Ok, its been a while since I did much more than think about my micromouse, but over the last week or so I actually did some work` on the sensor design First off this is all theoretical, I need some bits an pieces before I can test this outside of simulation..... -
This article aims to show you how to control a DC motor though an H-bridge driver chip using the PWM output from a PIC to achieve speed control. Although I am using a PIC microcontroller other controllers such as AVR`s, Basic Stamps and certain Picaxe`s can.... -
Craftsman Garage Door Opener Schematic Garage Door Opener Installation Manuals. Sears Craftsman Garage Door Opener Parts,. Garagen Beratung With 15 years in the business, Garage Door Openers Superstore is a... -
Mark IIc+ has a reputation of being one of the most sought after amps today. Only 1500 of them were made back in the 80 ²s and these days they go for up to 4000-5000$ a piece. One of the players that made this amp famous is John Petrucci. Being a Petrucci.... -
The first board was digitally controlled but the actual welding current is analog. This allows the board to operate real time without the need for the CPU to process the voltage/current. A block Diagram is shown below: It is basically a switching power.... -
This began as a simple project to build a cheap phono stage for a very old turntable with a cheap cartridge out of parts on hand. However, it turned into a pretty good project that definitely outclasses the rest of my analog setup. Oh well, at least it was.... -
I am rewiring my entire house after a major malfunction of two antique knob and tube circuits. I`m up against a challenge with some outdoor lights. Here`s the situation: I have a detached garage. It has a porch light over the service door, and it works on a.... -
DIY TDA2050 Non-Inverting Chip Amplifier (chipamp) Project constructed on a protoboard.. -
Mark builds and tests the DIY Moving Magnet (MM) Phono Preamplifier Kit that was featured in Silicon Chip Magazine, August 2006. The kit comes complete with everything you need except for an enclosure and a power supply (AC walwart). ... -
12AU7 (ECC82) Cathode Follower Tube Preamplifier Schematic. Two stage 12AU7 preamplifier with low impedance output stage. The overall gain is about 8 times.. -
6DJ8 Tube RIAA Phono and Line Preamplifier Schematic. The HT power supply uses tube rectification and regulation.. -
6DJ8 / ECC88 Symmetrical SRPP Tube Preamplifier Schematic. Gain of the preamp is 27 dB (about 23.5 times)... -
This two-stage audio preamplifier is intended for use with high-fidelity magnetic phonograph pickups. The overall gain of the circuit is about 150. The circuit is from the RCA tube receiving manual and meant for use with the famous RCA 7025 twin triode..... -
Direct-coupled Single-Ended (SE) 6V6 and 6V6GT Tube Amplifier Schematic with ECC83 Driver Stage. From the book Build your own Audio Valve Amplifier by Rainer zur Linde... -
Mullard EL34 push-pull vacuum tube amplifier scheamtic using Dynaco A420 audio output transformers.. -
The NP-100v12 is a simple headphone amplifier that allows an entry level builder to experience assembling and listening to their own creation. I use the term builder as electronic experience combined with innovation which allows the creation of a device,.... -
Not thrilled with how a computer soundcard drove my 32 ohm Grado SR80 headphones, I decided to build myself a desktop headphone amplifier for the office. In this instance I had plenty of voltage gain, but the sound card just runs out of gas with good.... -
This is my DIY build of the Boozhound Laboratories JFET Phono Preampifier, but on a stripboard. The BHL preamp is based heavily on the Le Pacific RIAA phono preamplifier circuit shown below for reference. This is a strip board construction using brown.... -
A very simple DIY Class-A MOSFET Amplifier Project that uses only a one Hitachi 2SK1058 N-Channel MOSFET in a single-ended circuit..
New Circuits
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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.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
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.....
Popular Circuits
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Follow the request of friends who likes High power Amplifier Circuit. I then beg for to advise...
JFET input. PN photodiodes such as the popular "bullet cell" put out an extremely low-level...
This circuit is designed to check the condition of lead-acid and gel cell batteries with...
As shown in FIG lithium battery is a constant current charging control board, the figure Q1, R1,...
Circuit principle: computers AC power load is large, the use of the current transformer current...
Circuit shown in Figure 3-176. This adjustment method, the motor can run at equilibrium,...