High Precision Temperature Indicator
Posted on Feb 19, 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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The 555 circuit below is a flashing bicycle light powered with three C or D cells (4.5 volts)....
This generator will supply sine, triangular, and square waves from 2Hz to 20kHz. This complete...
This doorbell circuit produces a low tone that will slide up to higher frequency. The equivalent...
A class-A audio amplifier is pretty wasteful of power but when plenty of power is available the...
A low-voltage demonstration Tesla coil using a solid-state photovoltaic relay to replace the...
By means of a Relay, employed to drive a water pump, this circuit provides automatic level...
The 555 Timer shown below is configured as an 555 Astable Multivibrator previously discussed....
As my principal hobby interest is now photography and I work crazy long hours at Imatest, I won`t...
BattMan II is a computer controlled battery manager, intended for typical rechargeable batteries...
The TDA2040 is a monolithic integrated circuit in Pentawatt package, intended for use as an audio...
Analog Devices 1831 to produce strain gauge signal conditioning ICs, contains an internal low...
Anatomy of the two ignition experiments, measuring the three normal ignition, found a common...
As shown in FIG circuit by the voltage - frequency converter and an amplitude modulator. Input...
Charging apparatus shown in schematic circuit, the maximum output current of 20A, the maximum...
Circuit characteristics: O simple phase shift range 180. ; good linearity, control accuracy than...
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