Telephone Silencer
Posted on Jul 13, 2012
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.....
.
Using ADF4007 high frequency divider PLL synthesizer can be designed a variety of communications...
Advanced power control systems make use of electronic plans like Thyristors pro power switching,...
The article now describes how to build a charger controller board and how to program the AVR...
Before trying to understand a full bridge circuit, you may care to read up on PWM controllers,...
This circuit provides a simple means to determine the voltage of a low-impedance voltage source....
This portable am fm radio circuit is designed using the LA1800 IC and some other external...
The intercom schematic fulfills its tasks to provide a reliable communication line and is very...
This is a multifunction RJ45 network cable tester. It is the design of the network cable (RJ45)...
The difference between instantaneous frequency and central frequency of the carrier will be...
This schematic is for an extremely bare-bones circuit and includes only the needed components to...
A simple but effective fixed gain transformerless microphonepreamplifier circuit diagramin the...
This egg timer, which is both simple and functional, shows once again that it is not essential to...
A typical circuit at 20 MHz is shown. The crystal, which has an internal series resistance RS, of...
As shown in FIG grounds ISO102 and XTR101, op amp, isolated remote transmitter circuit having...
As shown in FIG inverted to adopt IC1MAX868 and CMPSH-3S consisting of four times the pressure...
characters left: