Opamp Design and Test Board
Posted on Jul 18, 2012
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.....
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This single sided proto board provides an economical solution for developing and testing the...
First circuit is for connecting VGA card to video projector or a monitor which accept VGA card...
This simple tone control can be used in may audio applications. It can be added to amplifers,...
The Hand Steadiness Tester is a game which tests the steadiness of your hand. The player has to...
It's basically a photovore with a couple tactile sensors. It's rather complex but can give neat...
To be able to implement analog to digital conversion using the ADC0804LCN 8-bit A/D converter....
Octal Preamplifier can also be built as a stand alone unit without the linestage part. This is...
Nowadays, just about every house has an outside lamp with a motion sensor. Such a device...
yeah, you really need some current limiting. i use open frame linear supplies for charging...
This controller is essentially 3 pairs of LED sensors in a 3G -bridge configuration. The driver...
This project was used to introduce a friend of mine to microcontrollers and circuits. I wanted...
At this point you whistle into the receiver and the Infinity Bug will pick up the line. The...
A pressure sensor circuit, a pressure sensor is nominal resistance 120n. The amplifier circuit is...
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