Telephone Technical References
Posted on Feb 5, 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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Power this project from sunlight with a CirKits solar power circuit board kit. Other LED lamp...
The Hand Steadiness Tester is a game which tests the steadiness of your hand. The player has to...
The original TX was designed to be only PULSE Modulated for a proportional R/C system, but I...
This week was spent completing a number of different objectives. Firstly, the software was...
12V of power, and wanted to power LEDs with a forward voltage of 2V, could I only power 6 of them...
Today`s electronic designs are focusing more on optimizing efficiency in an attempt to minimize...
Using the MAX8844 lithium ion charger IC released by Maxim Semiconductors you can design an very...
Using high voltage transistors can be designed a DC power supply that can provide a supply...
The buck-boost converter is of value where the output and/or input voltages vary to such an...
All you need to do is substitute transistors for the tubes used in these fundamental oscillator...
AC by VDI ~ VD4 full-wave bridge rectifier output pulsating DC power for four lights. Rl, R2, VD5...
As shown, in FIG a decimal seven storage - Decoding - drive unit 74 143, this unit has a...
Fans decorative light circuit in Figure 2-130, the circuit consists of step-down rectifier...
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