FM Transmitter

Parts List: R1,R3 = 10K C1,C2 = 0.1uF Q1,Q2 = 2N3904 R2 = 100K C3 = 0.001uF L1 = see text R4 = 4.7K C4 = 10-40pF R5 = 330 ohm C5 = 4.7pF Construction: L1 is 0.1uH, 6 to 8 turns of 22-gauge hookup wire close wound around a 1/4-inch diameter no

Posted at 10-03-09 by Admin views(3037)

miniature fm voice transmitter

Parts List: R1 = 4.7K Q1 = 2N3904R2 = 330 ohm L1 = see textC1 = 0.001uF (1nF) Electret mike, antenna, 3V battery (button cell)C2 = 10-40pFC3 = 4.7pF Construction: This is another easy-to-build miniature transmitter that uses a minimum of parts.

Posted at 10-03-09 by Admin views(4682)

miniature fm transmitter

Parts List R1,R4,R6 = 10K C1,C2 = 0.1uF Q1,Q2 = 2N3904 R2 = 1M C3 = 0.01uF L1 = 0.1uH R3 = 100K C4 = 4-40pF R5 = 100 ohm C5 = 4.7pF R7 = 1K Construction This miniature transmitter is easy to construct and it's transmissions can be pi

Posted at 10-03-09 by Admin views(3462)

1W FM radio transmitter C1971 RF power amplifier can be used for it

(microyao Note: This map output amplifier stage can be used for C1971 RF power amplifier driven by class)

Posted at 10-03-09 by Admin views(20486)

40 watt FM transmitter amplifier

Indicators and characteristics of the circuit: Component List No component param

Posted at 10-03-09 by Admin views(15297)

Use C1972 make 10-15W amplifier 88-108mhz

The PA can be reactive 1-2W

Posted at 10-03-11 by Admin views(8023)

1.5V Tracking Transmitter

Additional Notes o For stability, use a NPO types for C2 C4. o Resistance tolerance for R1 should be 1 or 2%. o Frequency range is the usual 87-109Mhz on the FM dial. o The coil is made from 22 ga 'hookup' wire, like the solid Bell phone wire. Leave

Posted at 10-03-09 by Admin views(2868)

DIy a wireless fm transmitter test

The photo shows a wireless FM transmitter, pocket radio and yellow disk for size comparisons. Speak into the transmitter and others hear you on any FM radio. The transmitter can be built in an afternoon with simple, affordable and widely available pa

Posted at 08-11-24 by Admin views(28952)

Stereo FM Transmitter BH1415F

Here is a stereo FM Transmitter based on BH1415F wireless audio link IC.Phase Locked Loop controller use Microchip PIC16F628 and the the PLL frequency programming can be displayed with 82 and 162 LCD display.The frequency range can adjustable from 88

Posted at 08-08-09 by Admin views(2733)

Simple FM transmitter

This is a single transistor FM transmitter that is about the size of a standard AA battery. The site has all the schematics and technical specifications needed to complete the project. Let the bugging begin! .Main advantage of this circuit is that po

Posted at 08-08-09 by Admin views(5715)