Active Antenna I
Posted on Aug 7, 2012
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 most common appl icat ion for the NTC thermistor is temperature measurement. Accurate...
This design explains how to use an encoder to set the number shown by a 7-segment display. Turn...
The heart of the circuit is IC2, a 50240 top-octave generator. That device uses a single...
Intended for extreme temperature, radiation-hardened environments, this linear supply is capable...
Transformer Tl can be any matching transistor type in the range of 500/500 to 2500/2500 ohms. No...
Capacitor C1 is charged through timing resistor R1 when the clock output is high. When C1...
Wolfram SystemModeler ships with model libraries for a large selection of domains such as...
Simulation of behavioral DSP designs along with analog/RF circuit designs is critical to the...
In order to make the circuit work, it is important to set the fuse bits inside the AVR micro...
A small 325mW amplifier with a voltage gain of 200 that can be used as a bench amplifier, signal...
A VU-meter is a very common instrument usually installed on audio Hi-Fi amplifiers and is used to...
The schematic circuit design is for a 250 watt output, while the pics are of my 1500 watts...
The first television set I ever saw appeared in our house in about 1950. It looked like this -...
220V AC by VD1-VD4 bridge rectifier, all the way to supply four lights HI ~ H4 electricity,...
AC solenoid DC circuit operation DC operation AC contactor circuit on the same principle, but the...
As shown, the circuit due to the integrated amplifier, so the circuit is simple, small size....
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