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Posts tagged Radio

Make Tv Amplifier and Radio Transmitter Fm – 30 watt amplifier scheme

30-watt amplifier scheme is continued from other pages shown below provides an energy boost in accordance with the input of 4 watts to 6 watts. increase power output function is to increase the distance of the sender and recipient. This circuit is designed to cover 88-108MHz FM Broadcast Band. However, this circuit is very stable […]

Circuit and Making Schema Alarm LED – speaker – remote – radio – for Car

I decided to build a compact, yet effective alarm. My demands were:- simple construction, reliable operation, very small power consumption, and, most of all, small size. I started with CMOS logic gates, but was soon forced to abandon the concept after a few unsuccessful attempts. Then I suddenly realized that a simple transistor switch might […]

TV Circuit board diagram?

sanje1974 asked: How can i locate LG-21FA20 tv curcit board diagram

Transmitter circuit schematic with MC2833 delivers up to 3W

Transmitter circuit schematic with MC2833 delivers up to 3W It is capable of operation over about 29 to 32 MHz with the components shown. A 27MHz NBFM transmitter circuit schematic with MC2833 and 2 FEET transistors MPF6660. Using a Motorola MC2833 one-chip FM transmitter, a few support components and am MPF6660 RF amp, this transmitter […]

Digital volume control circuit

Digital volume control circuit DUAL ELECTRONIC VOLUME CONTROL The KA2250 is a CMOS designed for electronization of dual volumes. It is suitable for M/C, car stereos. FEATURES Wide supply voltage range: Vdd=6V~12V (Backup is possible up to 4V) Attenuation can be controlled from 0dB to -66dB by 2dB/step. Controlling attenuation by means of the built […]

Guitar Amplifiers

100W Guitar Amplifiers using BD139, MJ11016, MJ11015 100W Guitar Amplifiers circuit using BD139, MJ11016, MJ11015 R1     6K8    1W Resistor R2,R4  470R   1/4W Resistors R3     2K   1/2W Trimmer Cermet R5,R6  4K7  1/2W Resistors R7     220R   1/2W Resistor R8     2K2  1/2W Resistor R9     50K   1/2W Trimmer Cermet R10    68K   1/4W Resistor R11,R12R47   4W Wirewound Resistors C1,C2,C4,C5 47µF   […]

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