Motor Control Circuits
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This is the schematic diagram of DC motor speed controller circuit. The circuit applies two oscillators/timers which are connected as a Pulse Width Modulator (PWM). The timer chip which applied in this circuit will be an nmos dual timer/osc.... -
Controlling the speed of a motor is very important in many situations especially in robotics. There are many techniques of controlling the speed of motors, each with their advantages and disadvantages. This document will show you how to build a motor.... -
A DC motor worksby converting electricpower into mechanical work. This is accomplished by forcing current through a coil and producing a magnetic field that spins the motor. One technique to vary the speed of a DC motor is by varying the voltage on the coil.....
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.....
These two simple circuits provide zero voltage switching. They can be used with full wave bridges...
The LM39X4 acts as a LED-driving vol-tometer that has its basic maximum and minimum readings...
This circuit is used to meter the audio power output of an amplifier feeding a speaker. RY1 is...
Section Ul-a is configured as a high-gain inverting voltage amplifier that is inductively...
When the power supply input to IC1 is the output pin 3 at a frequency of 1 kHz. The frequency is...
TDA7021T dent radio receiver abuttals is for carriageable radios, stereo as able as mono, breadth...
Here, S1 and S2 are normally open, push to close, press button switches. The diodes can be red or...
When VOUT is very low during start-up or a short-circuit fault on the output, the switching...
Used buba oscillator and it didn`t oscillate in the begining. first thing you should check the...
Lead acid batteries often fail prematurely due to over-charging, under-charging, deep discharging...
This circuit provides an FM modulated signal with an output power of around 500mW. The input Mic...
Inverter circuit to power EL backlights and fluorescent tubes, so the output is about 127 VAC as...