Amateur Radio Projects
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.....
.
This circuit sent out an alarm when its LDR sensor is exposed to light by sun or lamp. A 555...
One type of regulator of tone / tone controls are the Audio Graphic Equalizer. Audio Graphic...
As it turns out, many types of LEDs appear to exhibit gain effects akin to those of an avalanche...
This design replaces the incandescent bulbs in the stop, tail and indicator lights of an MZ or...
Metal detector using avr tiny13. i m planning to use 555 ic to energize the coil and giving this...
About a do-it-yourself alarm arrangement body with PIC18F452. It`s a abundant amusement activity...
The series of light switches this time slightly different from the voltage of work. The series of...
Experimenting with a vacuum tube VCO similar to the one in the link below, but with a few...
This circuit enables observation of movement between other stroboscopes. Generation of...
The input signal it is applied to a gate G and then to a counter, for a precisely period of time...
This is schematic of a synthesized PLL for the Low Power FM transmitter. By the way, you also can...
AF modulating signal is applied to gates of matched FETs in push-pull through T1 having...
As shown below, the following figure is the use of a relay or the like of the starting circuit....
Circuit shown in Figure generator consists of an oscillator, voltage follower, the amplitude of...
characters left: