Detector switch circuits
Posted on Feb 6, 2014
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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 frequency doubler uses only one !C. Like other doublers, this circuit uses both the rising...
A simple bridge rectifier and a 12-V regUlator powers the MOSFET sensing circuit. The unregUlated...
The base of Ql is connected to the car`s ignition circuit; the easiest point to make that...
This circuit is basically a system that generates a pulsed modulation signal for a Gunn diode...
I`ve decided to start selling these on ebay to raise some money for parts. Here`s a link to the...
A step-down circuit used to approximately divide by two the rms voltage between the line input...
This circuit uses the LM358 operational amplifiers (or any single supply op amp) to generate a...
This is a low cost fm antenna booster that can be used to listen to program from distant FM...
Normally home appliances are controlled by means of switches, sensors, etc. However, physical...
Gyrators find application in DC holding circuits which are used in most DAAs (Data Access...
This instruction shows how to convert a standard microscope with light bulb to LED light. Only a...
A circuit diagram for an adjustable rpm switch. It ’s something you can use to activate solenoids...
When a new computer modem enters the household, the demands on the home phone line skyrockets....
Digital Amplifier is a new device, IC manufacturers will not miss this opportunity, have launched...
As shown for the simple high-frequency signal generator. Change the LC resonant circuit...
Circuit shown in Figure 3-16. It uses 555 IC A as the control element; capacitive step-down...
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