antenna tuner circuits
Posted on Feb 4, 2014
Related Circuits
New Circuits
-
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.....
.
T1 steps down AC voltage from 115VAC (or 220VAC) to about 8VAC and is then rectified via bridge...
The first SUPERTEF version was using a 68HC11 microprocessor in extended mode i.e. with an...
The main (and only) job of this circuit is to activate a buzzer or a relay, each time the level...
With a constant current excitation, the voltage dropped across an inductance increases with...
The LED indicates the status of a remote telephone. The light is off if the phone is hung up. It...
Today a close friend visits tell want Dry cell lead acid battery charger circuit 12V 7. 5hA...
This 3V to 24 volt variable-regulated power supply can be adjusted from 3 to 25 volts and is...
get it on and off continuously. The circuit is using a well known NE555 timer IC which is a very...
I`m a bit of a newbie, but I love to experiment. I thought I would try to make a small guitar...
Many of my friends asked me for automatic on off led circuit or led flashing circuit so here I`m...
The control of electric motors is something which interests nearly everyone involved with Meccano...
The RF modules used in this schematic are very simple, with only a few extra pins required for...
Home-made antennas can greatly improve the performance of AM and FM radios, short-wave receivers,...
As shown in FIG constitute grounds L4970A power switching power supply. L4970A is a high-power...
characters left: