Wide frequency oscillator
Posted on Nov 29, 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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The circuit below uses a CMOS dual D flip flop (CD4013) to toggle a relay or other load with a...
The heart of the clock is a PIC 16f628A microcontroller (PDF). This microcontroller has an...
At half brightness, the lamp current is pulsed on and off (Fig. 50-12b) by the voltage developed...
This circuit uses a dc amplifier (324) in a bar-graph circuit that uses an LM339 Quad comparator...
The transmitter for the wireless headphones is built around a CD4046 CMOS phase-locked loop,...
Burst Mode operation maintains high efficiency at light loads by reducing IC quiescent current to...
The aim of this project is to create a setup to capture the image of a falling object or any...
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Sealed-lead-acid batteries, which find wide use in power-electronics products, such as UPS...
It is impossible to imagine present day society without any batteries. Count the number of...
This beeper circuit will generate an car-splitting 110dB from 9V. The setup uses a single 74C14...
amplifier, with bias at cutoff. Q5 acts much like a grid-leak detector. Without the subcarrier...
The ISL6528 provides the power control and protection for two output voltages in high-performance...
Is it (when operated through a spark gap) allways a quarter wave, or a half wave or multiple of a...
Adjust value of R1 to get good performance of sensor LDR, if in your practice with 2. 2 M ohm...
Circuit shown in Figure, when the phototransistor VT1 receives infrared light-emitting diode to...
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