Feld-Hell electronic circuitry and schematics
Posted on Feb 7, 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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This project involves making several modification to an early 1960s era Victoreen CDV700 or...
The above circuit will charge any 2-cell * Li-Ion battery pack. Maximum current is about 650...
The PhytoBot is a semi-intelligent plant which responds to external stimulus (light intensity and...
Developers of human-computer interface technologies have recently been focusing on the use of...
Copyright of this circuit belongs to smart kit electronics. In this page we will use this circuit...
Depending on its design an electric guitar may have anything from one to six pickup elements....
The AM Transmitter circuits in two and a half, audio amplifier and an RF oscillator. The...
This circuit is a Adjustable voltage reference circuits, a voltage source which provides a...
Here is a schematic of a simple 555 organ circuit. The circuit is consist of two parts first 555...
When designing bass reflex loudspeaker cabinets, it is necessary to measure the resonance of the...
If you have an application in which a MOSFET is already used to switch a load, it is relatively...
The induction coil forms part of the anti-sidetone circuit. It couples audio to the receiver, and...
Supports LCD Module (16x2 HD44780) Includes AVR Micro ATMEGA168 programmed with demo/test code....
A universal rechargeable lithium battery circuit design, applicable to different battery types...
Electronic thermometers as shown in the circuit. RT is the thermistor, A is an integrated...
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