DMM-ProfiLab 4.0
Posted on Mar 11, 2013
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 circuit uses a UM3561 IC to produce four different sound effects. Nothing too complicated...
I have received several emails asking how to connect up some lights so that when the phone rings,...
This digital volume control has no pot to wear out and introduces almost no noise in the circuit....
High quality, noise free, wireless FM transmitter/receiver operates over standard power lines....
The video master consists of a series of converters that place all your video sources on unused...
A Wien bridge oscillator produces sine waves with very low distortion level. The Wien bridge...
4QD manufacture motor speed controllers so all our H bridges are PWM. Here`s a simple switch...
The Q meter has been an essential piece of equipment for laboratories engaged in the testing of...
Magnetic reconnection refers to the local breaking of magnetic field lines and subsequent change...
A sound origin direction indicator comprising a flat square-shaped form having four sound...
This Led table or reading lamp circuit can be used for many purposes for example as a reading...
The Morse Beepy is a circuit I designed to be simple and cheap enough for kids and adults to use...
The circuit is split into two sections: the isolated external loop which is connected to the...
This circuit came from a need for a "quick and dirty" network tester that could be operated by...
As shown is composed of a transistor relay delay pull circuit. Just power, 16 F capacitor...
Common collector amplifier via a DC and AC (3) common-collector amplifier circuit DC and AC path...
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