The lf555afosc1. pdf file download is the diagram (with notations) of Sub-Tone (CTCSS or `PL`) Oscillator, made with the famous 555 timer IC set up for astable-multivibrator operation. The values shown place the tone range near the center of the standard CTCSS Sub-Tone Range. You can build this circuit very small, about postage stamp size. Connecti
Click here to download the full size of the above Circuit.
on is made to the "high side" of your transmitters deviation pot (not at the mic input). The comparator operation of the 555 provides a measure of stability against voltage fluctuations. You can adjust the tone range with slight value changes in the. 1uf capacitor. This circuit also makes a nice DC Clock Pulse Generator by taking the output as noted. The file is in Adobe PDF format, but you can right click your mouse and save the gif file picture (shown just above) from this description page. We/I get a lot of Email from visitors who drop into these file down load description pages via a web search "engine" (like Google). Vistors are not able to locate the file download icon for that specific description page. There is a simple way to find the file download icons on the main sonic web page. Second: Back space out the page your now looking at in your browser location line. As an example, using the description page. Remove the last portion of the web location with the keyboard back space key to read then press your Enter Key to reload the main sonic page "just in front" which would probably has the inforamation you`re looking for. This works on most of the current browsers at most web sites.
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.....
characters left: