Wideband a transmission or communication channel or medium which consists of a wider bandwidth than one voice channel with a carrier wave of a certain modulated frequency and is capable of transmitting more information than narrowband but less than broadband AF125 a high frequency germanium PNP transistor operating at 75 MHz, with voltageof 20 V at 10 mA current, enclosed in a TO-72
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package, and used for RF & IF amplifier, preamplifier mixer, FM mixer, and oscillator up to 900 MHz The input of the circuit comes from the BNC jack where the sensitivity of the receiver can be adjusted to increase accordingly. This can be achieved in the presence of interference between the circuit and the aerial source of the RF amplifier. The resonant circuit used in the amplifier circuit is made to be suitable for mid waves and for the low waves which oscillates up to 40 MHz. The circuit is consuming a total of 7 mA of current while the gain is in the measurement of 20 dB. All these values are due to the presence of a 12 V up to 15 V DC supply. The input and the output of the circuit are designed to be compatible with coaxial cables with complex resistance of 75 Ohms. Short coaxial cables are being used for ham radio setups, home video equipment, and in measurement electronics while long coaxial cables are used for connecting television, radio networks or telephone companies. There are some problems that have been encountered in using coaxial cables such as ground loops, common current and radiation, induction, signal leakage, and transformer effect. The idea behind the construction of wideband RF amplifiers may be found in RF measuring equipment, communication receivers like GPS receivers, and other related devices. They are designed to operate in conjunction with its series of waveform generators that will provide a...
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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