Wein Bridge Oscillator 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.....
The following diagram shows the basic laser pointer circuit. It is identical to the infrared...
This simple circuit from the May 1996 Think Tank column of Popular Electronics activates a relay...
This circuit uses a tricolor LED display to indicate acceptable and unacceptable output voltages....
The incoming RGB inputs are terminated with resistors Rl, R2, and R3 and potentiometers RVl,...
A three-way switch to control a lamp (off-dim-bright, etc.) uses an NE555 timer to generate a...
The LM78XX series typically has the ability to drive current up to 1A. For application...
Schematic shows R4 at the emmiter of the transistor, as amb and majkel have suggested it should...
This adaptor circuit is essentially a 100mA constant current source. It is applied across a...
The 900 Hz tone is generated with an LC-oscillator. The "L" part of the "LC" is provided by the...
This is about as close as you can get to a real vintage Pultec EQP-1a. Built from the original...
Solder aid is an extremely useful device which sucks the poisonous gas due to melted soldering...
AD594/595 can also be configured to Celsius, the circuit shown in FIG. This time should be IN +,...
By two NAND gates Di, Dz and resistor Rz, capacitors Cl etc. RC self-excited multivibrator...