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10.7MHz FM Detector: (design added 8/03) |
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150mW FM Transmitter: (circuit / schematic design added 6/06) |
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2 Transistor FM Transmitters #2: (design added 8/03) |
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2 Transistor FM Transmitters: (circuit / schematic design added 6/06) |
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2 Transistor LED Flasher #1: (circuit / schematic design added 6/06) |
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2-transistor FM Transmitter: While re are a plethora of similar 2-transistor
schematics available, this one is above average. A major improvement over little
1-transistor circuit that we've discussed previously, this transmitter consist of two
stages. first transistor is used to amplify audio, which means that
microphone is now much more sensitive to sound. second one acts as an
oscillator. All in all, this is an interesting project for beginners and more
experienced hobbyists alike. Use any stiff wire or telescope whip antenna, just make
sure that it's not too long. Range should be about 100m or even more in open.
Stability is still a problem, though. (added 6/06) |
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5 Watt FM Transmitter with Antenna (88-108 MHz): (electronic (schematic /
circuit added 11/05) |
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A High-Performance FM Receiver for Audio and Digital Applicatons: design
offers high sensitivity and low distortion (added 10/05) |
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Add a signal strength display to an FM Receiver IC: 09/05/02 EDN Design
Ideas / (added 1/05) The Philips (www.semiconductors.philips.com)
TDA7000 integrates a monaural FM-radio receiver from antenna connection to
audio output. External components include one tunable LC circuit for local
oscillator, a few capacitors, two resistors, and a potentiometer to control
variable-capacitance-diode tuning.... |
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AM
FM Simultaneous Transmitter using Digital IC (CD4001): (circuit / schematic
design added 6/06) |
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Am/Fm/SW Active Antenna: This circuit shows an active antenna that can be
used for AM, FM, and shortwave SW. On shortwave band this active antenna is
comparable to a20 to30 foot wire antenna. This circuit uses receivers that use untuned
wire antennas, such as inexpensive units and car radios. L1 can be selected for
application (added 6/06) |
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AN-146: FM Remote Speaker System: National Semiconductor Application Note
(app note added 6/06) |
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AN-543 - Monaural FM Transmitter (DSP, 20,641 bytes):
AN-543-MonauralFMTransmitter-Analog Device Application Notes (app note added
6/06) |
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AN-543 - Stereo FM Transmitter (DSP, 26,085 bytes):
AN-543-StereoFMTransmitter-Analog Device Application Notes (app note added 6/06)
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Ck-3V FM Transmitter: Circuit design (added 02/05) |
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Coilless FM Transmitter!: (electronic circuit added 10/05) |
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Crystal Controlled FM Transmitter: (circuit / schematic design added 6/06) |
