Voice bandpass circuit diagram
Posted on Mar 28, 2007
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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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This amp uses the basic circuitry of the 60W power amp (see Index), but modified for true Class-A...
Converter consists of four quad bistable latches activated in the proper sequence by the digit...
This circuit shows the TP5700 directly interfacing to a low-voltage DTMF generator. VREGt...
For use with low-power transmitters with a positive keying voltage. Q1/Q2/Q3 form a switching...
This is the circuit of LED color fade effect. Just like the name of the circuit, the light...
Converting into voltage is undesirable for two reasons: first, an impedance is inserted into the...
It has to placed making an angle of about 30 - 45 degrees to the ground. This makes the rain...
Crystal radios have been around for over 100 years and exist in many different shapes, sizes and...
An obstacle avoiding robot is an intelligent device, which can automatically sense and overcome...
Avramenko is a Russian scientist and invented the plug shown in Fig. 1 to transmit electrical...
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