Here is another mini circuit project. This is a Mini Amplifier that have a simple tone control. Here is the Scheamatics [caption id="attachment...
Here is another mini circuit project. This is a Mini Amplifier that have a simple tone control. Here is the Scheamatics
Mini Amplifier
You can comment here if get something wrong with this electronic schematic design
Here is a small project about FM receiver that you can built with a little cost. The schematic below
This is a very simple kind of receiver. The dificult point is to get the inductor coil, i think there a no electronic store that sell this coil. so you must make it by yourself
Below i have finished develop a mini fm transmitter that work fine at frequency 88 – 108 MHz. This is a simple FM Transmitter that can be used in a small city (2-4 Km). Here is the schematics
mini fm transmitter
if you could not understand please feel free to comment here
This is a VHF amplifier for the Band 2 Radio Spectrum tuning approximately 88 – 108 Mhz.
click to enlarge the schematic
The circuit uses two 2N3819 FET’s in cascode configuration. The lower FET operates in common source mode, while the upper FET, operates in common gate, realising full high frequency gain. The bottom FET is tunable allowing a peak for a particular station. Coil details follow:
L1 4 turns of 18swg air spaced with a 1cm diameter, the tap is one turn up from earth end…
L2 4 turns of 18swg air spaced with 1 cm diameter. The coupling coil is 1 turn interwound from the supply end. Enamel coated wire must be used.
Circuit : Andy Collinson zen22142.zen.co.uk
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