Gain-Controlled Amplifier
Posted on Feb 27, 2013
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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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Video-DVM is a very cheap DVM that shows how an output as complex as a videocomposite signal can...
The instrument used to measure battery capacity. The battery may be charged to any current in the...
This page describes the hardware and software design of a printer power switch controlled over...
The Triac drivers use the 5 VDC output signal from the 74HC595 chip outputs (Q1, Q2, Q3, Q4, Q5,...
This is a simple siren sound that high power output and very noisy. ICs, Digital ICs are easy to...
This circuit detects when a tube is empty and pulses a piezo buzzer in. 5 second intervals. I...
This is yet another project born of necessity. It`s a simple circuit, but does exactly what it`s...
When the games timer is RESET, two things must happen. The 4017 counter must go back to zero and...
Very often we forget to switch off the peripherals like monitor, scanner, and printer while...
One of the coolest parts of working on the Yahoo Purple Pedals project was figuring out how we...
LM4610 is a US company following the LM1036 NS after the launch of a new class of high-end HIFI...
1B32 application circuit with multiple pressure sensor shown in Fig. Excitation power through...
Figure 1-1 The general-purpose timer once timing of 5 minutes to 18 hours; the timing cycle from...
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