Repository-circuits
- Page 84-
The oscillator is designed to tune from 1. 8 GHz to 2 GHz for typical cellular telephony applications. An extended tuning range can be obtained by adjusting the ratio between the varactor capacitance and fixed capacitance in the tank. PMOSFETs are employed.... -
How many times you needed some remote control to handle some electric device many times. There are lot of remote controls like infrared, RF, SMS (like my other circuit) and more. The basic small-range remote controls are 2, Infrared and RF (Radio Frequency)..... -
So, it turns out that I`m probably not going to use the Hijack approach to getting serial data from my Mindflex into my iPhone. This is mainly due to the fact that I have the majority of the components to build a similar system from scratch. The difference.... -
had to rewire a boat trailer due to damaged wiring and lights. I`m using a standard 4 pole flat connection to my truck. The trailer is simple - two rear lights and nbo side markers. Both rear lights are grounded to the harness to the truck. Almost everything.... -
I own a 2005 McGregor 26 sailboat. I had a Standard Horizon CP150C installed in my boat. I recently moved my boat to British Columbia, Canada and to my surprise my GPS unit did not power on. Although it is an old model it is brand new. I am the original.... -
Details of rigging an Evinrude E-TEC engine, particularly with ICON gauges and ICON controls, and with a special emphasis of NMEA-2000 details and TRIM circuit details... -
-
Explanation of the theory and practice of generating electrical energy from an marine outboard engine using a permanent magnet alternator.. -
LED is the most interesting part of amateur electronics hobbyist. The main barer of LED is, it needs minimum 3 vlots to illuminate. I`ve found many circuits to drive LED by a single cell alkaline or manganese cell. .. -
Application Notes, Resolvers as Velocity and Position Encoding Devices, Potentiometer, Incremental encoder, Absolute encoder, Resolver, Inductosyn... -
CoolCAD Electronics, LLC is a CAD and custom electronics design firm that specializes in satisfying non-mainstream electronic design applications.. -
This paper describes the process by which a control circuit for a stepper-motor was designed. Due to the nature of the stepper motor, the control circuit had to be a state machine that cycled through four output states based on two input conditions.... -
KC2ZPL Web Design, electronics, HAM radio, CW, homebrew construction, general electronics, high voltage, experimenter`s web page... -
Now that I have these power supplies, wouldn`t it be nice to evaluate their performance Traditionally you connect an adjustable load (a "beefy" resistor) to the output and measure both the output voltage and the current in a number of spots. Then it`s easy.... -
I`m currently using a Gecko G540 drive module to drive the stepper motors. This module has the ability to drive up to 4 stepper motors. They label the connections as XYZA - we`ll connect the C-axis stepper to the A output and leave the Y output unconnected.....
New Circuits
-
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
This is my second-generation guitar reverb circuit. The fidelity is much improved over the...
The Thermistor, or NTC (Negative Temperature Coefficient) of 10K, is a standard type. Most types...
This circuit has proved to be an effective video buffer and will easily drive a 75- load to...
The PhytoBot is a semi-intelligent plant which responds to external stimulus (light intensity and...
Metal detector using avr tiny13. i m planning to use 555 ic to energize the coil and giving this...
The microcontroller (MCU) is responsible for sending variable voltages over time (just like a...
The water sensor circuit is based on a 555 timer circuit and come common electronic components....
This topic covers a resonant equalizer which is a different style circuit than the common audio...
The circuit was deliberately designed using no ICs and in a rather old-fashioned manner in order...
This is the Sequencer circuit. Power to the Logic portion of the circuit is provided by a...
Here is a simple circuit based on 555 IC that generates a pulsed magnetic field. You may use this...