This is a 2W RF amplifier circuit build with single power MOSFET LF2810A. Figure A Figure A is the schematic of the microstrip single stage RF amplifier. The amplifier is based on the M/A-Com LF2810A MOSFET. The transistor is actually a 10 watt, 28 volt part, but provides adequate gain for this application at 12… Read More »
This is the circuit diagram of seismic / vibration sensor. The circuit simulates a seismic sensor to detect vibrations/sounds. It’s really sensitive and may detect vibrations due to the motion of animals or human beings. So it could be utilized to monitor protected locations to restrict entry of undesirable individuals or animals. The circuit applies… Read More »
This is a high quality 65W power amplifier circuit based HEXFET IRF9540 and IRF540. The circuit is quite simple for amplifier with good sound quality. The component parts is easy to find at electronic store around your place. It uses split power supply. Q8, Q10, Q11, Q12, Q13 should be mounted on heatsink for thermic… Read More »
This is schematic diagram of a video amplifier circuit, built based very high speed operational amplifier IC LH0032.
This is the stereo headphone amplifier circuit diagram, built based LM4809. This circuit can be used for stereo headphone amplifier circuit for home audio system, microphone preamplifier, personal computers and PDA headphone amplifier and more. The LM4809 is known as a stereo audio power amplifier capable of delivering 105mW per channel of continuous average power… Read More »
This is the schematic diagram of sound activated light or lamp. The lamp or light will be turned on while a loudy sound catch by the microphone (for example: hand clap) How this sound activated light works: The condenser microphone fitted inside a position to catch the sound and generates AC signals, which pass by… Read More »
This MOSFET Linear Amplifier has capability to deliver up to 300W for 50MHz. The circuit built based the couple of MOSFET ARF448A and ARF448B. Circuit Design:
This is a A/B Box switch pedal schematic with two inputs and one output and featured with dual operational amplifier modules. This circuit was designed by Rick Barker. This A/B Box effect was originally designed for switching between different harmonica mics. This A/B Box featured low noise dual preamp for better performance.
The circuit below is a Dynamic Mic Compressor circuit which is simple, easy to built, inexpensive but the results are quite satisfactory. Audio output sounded outstanding. The principle of this circuit is very simple, the first transistor is used as microphone pre-amplifier. Then a second transistor used as a buffer. And the third transistor is… Read More »