Temperature-to-frequency converter
Posted on Mar 4, 2013
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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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Here is a simple radio that is easy to build and inexpensive. In fact, you probobly have all the...
The PIC16F870 keeps track of battery voltage as well as both charging and discharging currents....
This circuit is used to give "1" signal when the phone is ringing. As you can see the ct. is...
Two NAND gates are used for the oscillator, and two as the control. If the two-tone speed needs...
Using an SCR/relay combination, this circuit can be made to cut off ignition, unless a positive...
Using this simple resistor circuit, you can trick your oscilloscope into displayin
If both the reading are high then the diode is short. If both the readings are Low then the diode...
Incremental-rotation or linear encoders are very common, but normally they do not provide a...
Without the specified delay the circuit could malfunction or even get damaged. A capacitor, which...
Figure shows a great project / schematic of a 12V solar LED night activated lamp circuit. This is...
We mounted one of them on a wooden sigar box and connected the anode via a large series...
This article describes an amplifier Audison LR604XR principle. The principle is simple there, we...
Charging circuit by the transformer Tl, diode VDI-VD4 and other components, 220V AC by Tl buck,...
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