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FM (Frequency Modulation) Transmitter
Circuits, page 2
Last Updated on:
Monday, October 03, 2011 06:07 PM
FM
Transmitters: #'s
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Links to electronic circuits, electronic schematics, designs for
engineers, hobbyists, students & inventors: |
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A bipolar regenerative receiver - Contrary to what some
radio experimenters think, a bipolar regenerative design can be made
to work efficiently. The major concern is the low input impedance of
the detector-amplifier bipolar…. [Circuit designed by Ramon Vargas] |
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A short wave regenerative receiver - Sensitivity and
selectivity are the major concerns of a short wave enthusiast when he
looks up for a receiver. Commercial communications models with
superhet circuitry surely satisfy his requirements, but these are
expensive. He would rather go for a homebrewed radio, being a
regenerative receiver an affordable choice.....(electronic design
added 6/07) |
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A Simple VFO for 80 & 160 Meters - This VFO is simple to
build and is quite stable. The VFO produces a two phase output (2
outputs), making it well suited to supplying a signal to either single
ended RF amplifiers, where only one.....(electronic design added
05/06/07) |
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Add a signal-strength display to an FM receiver IC -
5-Sep-02 Issue of EDN The Philips (www.semiconductors.philips.com]
TDA7000 integrates a monaural FM-radio receiver from the antenna
connection to the audio output. External components include one
tunable LC circuit for the local oscillator, a few capacitors, two
resistors, and a potentiometer to control the
variable-capacitance-diode tuning..... [Design Idea by José Miguel-López,
RF Center Ltd, Barcelona, Spain] |
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ALTOIDS Tin Part 15 Version FM Transmitter - The transmitter uses 2
MPSH10 (equiv BF494 or NTE229) transistors in a double-ended free-running voltage
controlled oscillator (VCO) operating at half the output frequency on each side
and combined at L2, which is tuned to the 2nd harmonic of the VCO and covers the
88-108 MHz range. A standard 9 volt battery is used for power and fits inside the
tin. The mono audio input circuit is totally passive with 70us pre-emphasis
provided and the audio quality is great. |
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AN-146: FM Remote Speaker System - National Semiconductor Application
Note (app note added 07/08/09) |
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AN-543-Monaural FM Transmitter DSP, 20,641 bytes -
AN-543-MonauralFMTransmitter-Analog Device Application Notes (app note added
3/06) |
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AN-543-Stereo FM Transmitter DSP, 26,085 bytes -
AN-543-StereoFMTransmitter-Analog Device Application Notes (app note added
3/06) |
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BA1404 HI-FI Stereo FM Transmitter - The above FM transmitter design is
a result of many hours of testing and tweaking. The goal was simple; to test many
existing BA1404 transmitter designs, compare their performance, identify
weaknesses and come up with a new BA1404 transmitter design that improves sound
quality, has very good frequency stability, maximizes transmitter's range, and is
fairly simple for everyone to build. We are happy to announce that this goal and
expectations have been met and even exceeded. |
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BandPass Filter - This bandpass filter is in fact a combined high- and
lowpassfilter. The first stages are a highpass (f>70MHz) and the last stages a low
pass (f<180MHz). The lost of this filter is several watts when driven with
20[Watts], but the output signal is (when adjusted with a spectrum analyser) very
clean. |
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BH1415F FM Stereo PLL Transmitter - This is FM PLL Stereo based BH1415F
IC from Rohm, it's has built in PLL and Stereo Encoder. You can download the
schematic, pcb layout and Hex code. The transmitter menu display with LCD, and
this have step 100Khz, 200Khz,.....1000Khz and have Mode menu (stereo/mono). In
Action, LCD Display can solder directly on the bottom. |
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BH1417 PLL Stereo Transmitter - This is the latest BH1417 FM
Transmitter design from RHOM that includes a lot of features in one small package.
It comes with pre-emphasis, limiter, stereo encoder, low pass filter, PLL rock
solid frequency transmission and RF output buffer. |
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BH1417 Stereo PLL FM Transmitter - Frequency is selected with a DIP
switch with 200KHz increments. Transmitter needs a 7.6MHz crystal. (circuit
added 8/06) |
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Bipolar Regenerative Receiver - Contrary to what some radio
experimenters think, a bipolar regenerative design can be made to work
efficiently. The major concern is the low input impedance of the
detector-amplifier bipolar…. [Circuit designed by Ramon Vargas] |
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FM Transmitters: #'s
A - B
C - E F
G - M
N - Q
R - S
T - Z |
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