Two-phase stepper motor drive system circuit
Posted on Mar 28, 2007
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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.....
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This document describes the transmitter system supplied to Radio Glen for testing as designed and...
Has an input resistance of 1-MO, a bandwidth from de to about 35 MHz, and a gain of 10 times....
This converter enables a receiver that tunes 28 to 32 MHz to receive the 144- to 148-MHz amateur...
The 220-240V AC mains source is stepped down to 9V AC by transformer X1. The transformer output...
This project consists of a small, portable DJ mixer powered by a 9V dc external supply adaptor or...
The bases and emitters are tied together, so the base-emitter voltages are equal. Since we assume...
This project was developed as an inexpensive way to drive small dc brushed motors as positioning...
I used some schematics from Elliot sound products to help with this circuit. L-In and R-In come...
The first was interested in a flexible preamp for use with a high-end acoustic guitar with...
This remotely controlled watering system is both inexpensive and easy to expand. It is designed...
If you forget to switch off the light after leaving a seldom used room (such as the loft),...
This web page presents details regarding the design of a strain gage based load cell that can be...
Many versions of VCXO`s this is the final version I have decide to use in all VCXO`s in the...
Circuit shown in Figure 2-48. Circle 2-48 (a) using 4.5V battery powered; Fig. 2-48 (b) AC...
Figure 16-29 (a) of the trigger output via a resistor R2; FIG 16J29 (b) for the introduction of...
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