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I.F. Amplifier - The I.F. transformer primary has 18 turns, the secondary winding
has 4 turns. The capacitors across the IFT primaries are 82pF. The input/output
transformer has 12 turns, tapped at 3 turns from ground. This transformer is wound on
a ferrite core. The mosfets are 3SK45's. The diodes in the product detector are
1N34's. I use a six pole SSB filter from a scrap CB. The centre frequency is 7.8MHz.
The -6db bandwidth is about 2.5KHz. (added 2/05) |
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IC Forms Differential Line Driver/Receiver - 05/25/95 EDN-Design Ideas / (added
3/03) you can use the HFA1212 dual video buffer to implement differential line drivers
and receivers with a minimum of external components |
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Improved Infrared Receiver with status led - This is a general purpose serial port
infrared receiver. With the help of appropriate software (see below) you can control
different functions of your pc from a distance. For example you can control your home
cinema settings (volume, play, pause, stop etc), your winamp etc....(circuit added
09/08) |
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Induction Receiver - The induction receiver shown below is very sensitive and can
serve a variety of purposes. It is excellent for tracing wiring behind walls,
receiving audio from an induction transmitter, hearing lightning and other electric
discharges, and...(diagram added 8/03) |
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Infrared Receiver for Sony Remotes - receive signals from a standard Sony remote
control and send the code bytes(2) received to an RS-232 port, based on PIC16C84
(added 4/02) |
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Infrared Transmitter and Receiver Schematic Diagrams - (design added 8/03) |
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Irda Serial Receiver - (electronic design added 6/07) |
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ISM Receiver with TDA5100 / TDA5200 - (electronic circuit added 6/07) |
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JT-MB-C in Low Noise, High Isolation Line Receiver for Low-Z Sources - AS035
Jenson Transformer Application Note (app note 11/02) |
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Lightening Detector - A VLF receiver tuned to 300 kHz designed to detect the
crackle of approaching lightning. A bright lamp flashes in synchrony with the
lightning bolts indicating the proximity and intensity of the storm. It has a superior
RF section with a single resonance near 300kHz and plenty of sensitivity. The antenna
is a telescopic antenna that extends to two or three feet.... (added 10/04) |
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Low Cost 4Mbps IRD Receiver in MS8 and SO-8 Package LT1328 - DN152 Design Notes
(Linear Technology) (app note added 1/06) |
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Low Cost‚ High Performance Receiver for Wireless Applications 1/16/94 -
Application Note California Eastern Laboratories Doc #904 (app note added 6/06) |
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Low Noise, High Isolation Line Receiver for Low-Z Sources - AS035 Jenson
Transformer Application Note (app note 11/02) |
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Low Power 40KHz Light Receiver New - Drawing only 100uA, this circuit provides
high sensitivity with excellent ambient light immunity. ….(designed by David A.
Johnson) |
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Low Power RS-232C Driver and Receiver in CMOS - National Semiconductor Application
Note 05 Oct1998 / (app note added 5/02) |
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Low-Power IC Packs GPS Receivers 7/31/01 - Application Note California Eastern
Laboratories Doc #953 (app note added 6/06) |
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Low-power, super-regenerative receiver targets 433-MHz ISM band - 2/2/06 EDN
Design Ideas / (added 09/06) Good for power-miserly battery-powered, shortrange,
wireless applications. |
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LT1328: A Low Cost 4Mbps IRDA Receiver in MS8 and SO-8 Package - DN152 Design
Notes (Linear Technology) (app note added 1/06) |
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Miniature FM Radio Receiver using TDA7088 - The electronic diagram of the
monophonic FM receiver made with TDA7088T is shown on Pic.4.12. If built with SMD
components it can be placed in a matchbox, altogether with two button-type batteries.
The operating principle of this device is given in the previous t.... (added 11/05) |
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MK484 AM Receiver - A complete AM radio set based on the MK484 IC (formerly
ZN414). It uses a PNP transistor and can drive a 150R loudspeaker. (added 11/05) |
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MPF102 FM Receiver - (electronic schematic / circuit added 4/02) |
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MPF102 Receiver - (design added 8/03) |
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MRX 40 Mini Receiver - (design added 8/03) |
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Nostalgic Crystal Radio - ….(design added 08/08) |
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One Transistor Regenerative Receiver - (design added 8/03) |
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One-Transistor Amplifier/Detector - An amplifier may be added to boost the audio
level as shown below. The current consumption of this amplifier is quite low and a
power switch is not included. Disconnect the battery when the receiver is stored for
long periods….(added 04/05/06) |
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One-transistor Regenerative AM Receiver - A classic design revamped slightly.
Features a single-transistor regen stage, and a range of 1000 miles with a 4-foot
antenna. Perhaps the best "survival radio",….(circuit design added 06/06) |
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OpAmp Radio (Aaron Cake) - (electronic schematic / circuit added 04/03/02) |
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Passive detector receiver keeps you informed entertained during flights - 05/12/05
EDN Design Ideas / (added 11/05) Receive HF AM signals without battery power. |
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Popcorn direct conversion receiver - schematic for a no-frills, relatively
low-cost CW superhet receiver with a 4.00 MHz Intermediate frequency. There is no AGC
or RF gain control, however this receiver has good large signal handling capability.
This receiver uses just 6 bipolar transistors and an op amp for reasonable volume into
headphones. Much ....(design added 05/08) |
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Q Multiplying Loop Antenna: - (electronic schematic / circuit added 4/02) |
