FM modulator strong - weak signal switching circuit
Posted on Mar 28, 2007
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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 output of the detector contains a term related to the cosine of the phase angle. Two signals...
In this circuit, an LM741 op amp drives a Wien-bridge network using two zener diodes as
This dc-to-ac inverter is based on the popular 555. A 555 oscillator circuit drives a buffer...
The circuit of the transmitter is shown in Figure 1, and as you can see it is quite simple. The...
Setting circles on an astronomical telescope are used as an aid to pointing the telescope at a...
The circuit even has a current limiting feature which is a more reliable system than most...
A frequency-selective frequency multiplier can be construct with a PLL system by inserting...
The infra-red (IR) toggle switch project described here is aimed to provide control mechanism for...
The ZN414 IC contains an entire automatic gain controlled AM receiver in a small three pin...
This Application Note describes the evaluation board for the AD7892-2 12-Bit A/D converter The...
Here is a simple Tachometer schematic. The basis of the frequency converter circuit-current,...
Is the battery empty, or is there something wrong with the device That`s always a difficult...
This is a collection of various useful and interesting schematics. Some of these are also...
The device emits ultrasonic sound waves that sweep between 65, 000 and 25, 000 hertz. Designed...
The last installment in this series ( LEDs 102 - Use On Board Trains ) ended with a few thoughts...
The figure is zero and span adjustment circuit includes a feedback resistor network and...
The installation of an electrical outlet in the refrigerator work light, not only to facilitate...
6-lOkV bus segment at the circuit breaker should be installed, but when any of the following...
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