Phase-Locked 20-Mhz Oscillator
Posted on Dec 27, 2012
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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 basically the frequency meter section of the frequency meter/pulse generator based on the...
The driver in the package is connected as a Schmitt trigger oscillator (A) where R1 and R2 are...
The input is ac coupled to the amplifier through C2, which blocks de signals that might also be...
This text-to-speech converter is built around the SP0256-AL2 speech processor and the Cf6256AL2...
When the vehicle"s backup lights kick on, or when the manual switch (SI) is closed, a small...
Time to learn by example. This tutorial will take you through all steps in creating a discrete...
A admirable diy gsm jammer or cellular adaptable buzz jammer schematic diagram for use alone in...
The problem is when i connect the 8051 to the encoder the data send is not received at the...
This fm transmitter circuit is very simple and it has a acceptable transmission. The signal...
There are 2 ways to build a protximity detector. One is mount the IR LED and the phototransistor...
There are systems in which it is imperative that the supply voltage of, say, a motor, always has...
A stepper motor is a motor controlled by a series of electromagnetic coils. The center shaft has...
Gently work a small screw driver around the mic element rubber boot, and slowly work it out from...
1237H-circuit principle shown in Figure 2-122. Its interior has four separate detectors can...
220V AC by Rl and R2 partial pressure, VD half-wave rectifier, the capacitor C in the left ends...
As shown by the bistable circuit and optocoupler transistor of FIG. In the initial state the...
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