1kHz square wave signal source circuit
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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 basic idea comes from the AN592 Microchip application note: "Frequency counter using...
Probably the best advantage is its very small size and the fact that it can run off the power...
The instrument used to measure battery capacity. The battery may be charged to any current in the...
Amplifier circuit with IC STK is tough and good quality. In this article an amplifier circuit...
The construction of this quite complicated circuit will be awarded with the joy of generating...
Generating long delays of several hours can be accomplished by using a low frequency oscillator...
Bold lines are soldered connections, arrows are wire based connections. Red for V_cc, Black for...
This is the circuit diagram of the simplest lamp dimmer or fan regulator. The circuit is based on...
The line-in pin is clearly visible in the pinout of iPod connector shown on the iPod wiki. From...
Michelson was the inventor of a unique interferometer that opened up new vistas in the science of...
The way that this receiver works is very similar to the way that we as humans beings work. We see...
The circuit is light seeking; it will follow a flashlight around a darkened room. A pair of...
The oscillator based on IC2 is responsible for producing the sound. Its output is connected to...
Circuit shown in Figure 2-48. Circle 2-48 (a) using 4.5V battery powered; Fig. 2-48 (b) AC...
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