Receiver Circuits
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Receivers: #-A
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I-Q R-S
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Last Updated on:
Wednesday, November 29, 2017 05:39 AM |
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Circuits Designed by Dave Johnson, P.E. : |
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2uS Light Pulse Receiver
Although the LF357 is an obsolete part,
this circuit gives you an idea how to build a sensitive modulated light detector
with high ambient light immunity. The first section uses a 100mH inductor as
an efficient photodiode current to voltage conversion circuit.
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Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
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$10 Receiver has MicroVolt Sensitivity - 08/18/94 EDN-Design Ideas A
three-transistor circuit in Fig 1 costs less than $10 to build, uses commonly
available components, and consumes less than 10 mA .... [Design Idea by Charles
Kitchin, Analog Devices Inc, Wilmington, MA] |
136 kHz Direct Conversion Receiver - The front end is described
elsewhere prea136.htm The scope is reduce as most as possible the
image frequency. I have also tried a different front end, based on a low pass
filter with frequency cut-off of 180 kHz. In my QTH I had a lot of
undesirables....(electronic schematic / circuit added 4/02) |
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144MHz to 50MHz receiver converter - A simple accessory for a
satellite station, that allows using a 6 meter capable radio in conjunction with
a typical S-band to 2 meter converter. [Manfred Mornhinweg] |
16 Bit PC Serial Port Receiver CMOS - This circuit was designed to
control a 32 channel Christmas light show from the PC serial port.
Originally designed with TTL logic, it has been simplified using CMOS
circuits to reduce component count. It is a fairly simple, reliable
circuit that requires only 4 common CMOS chips (for 8 outputs),.... [Bill
Bowden's website] |
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175kHz Inductive Pulse Receiver - This circuit is discussed in more detail in
the Experimenters Journal. The receiver’s six inch diameter coil detects the ring signal
from the above transmitter and use a single NPN transistor to provided enough
amplification for the signal to be easily viewed on an oscilloscope.... [Designed by David
A. Johnson] |
2 Transistor Transmitter (Rob van der Weijden) - A compact 2 transistor
transmitter for use at VHF frequencies…..(schematic / Circuit design added 8/08)
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2 Watt Switching Power Supply - In this small switching power supply, a Schmitt
trigger oscillator is used to drive a switching transistor that supplies current to a
small inductor. Energy is stored in the inductor while the transistor is on, and released
into the load circuit when the transistor switches off. The output voltage is dependent on
the load resistance and is limited by a zener diode that stops the oscillator when the
voltage reaches about 14 volts. Higher or lower voltages can be obtained by adjusting the
voltage divider that feeds the zener diode. The efficiency is about 80% using a high Q
inductor.... [Bill Bowden's website] |
27MHz toy car receiver - (electronic circuit added 4/05) [Peter Jakab,
Electrical Engineer, Engineer of Informatics] |
2uS Light Pulse Receiver - Although the
LF357 is an obsolete part, this circuit gives you an idea how to build a sensitive
modulated light detector with high ambient light immunity. The first section uses a
100mH inductor as an efficient photodiode current to voltage conversion circuit.….
[Designed by David A. Johnson] |
32 Bit Serial Receiver 57.6 K Baud TTL & CMOS - (circuit / schematic design
added 6/06) |
4 Band Double Tuned Preselector - The circuit requires an RF input which can be
from a longwire or a loop antenna. The Preamplifier has a range from 550kHz (Medium Wave)
up to 30 MHz in the SW band. The input Switch S1, applies voltage to a set of relays which
switch in the appropriate coils.... [Designed by David Sayles] |
40 Meter Direct Conversion Receiver - Using the circuit of direct-conversion receiver
described here, one can listen to amateur radio QSO signals in CW as well as in SSB mode
in the 40-metre band. The circuit makes use…. |
40 Meter Popcorn Superhet 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) |
40m Direct Conversion Receiver - Building a practical and usable direct
conversion receiver for the 40 m CW band is not as simple as it might appear. Broadcast
station signals from the adjacent 41 m band, will easily overload most direct conversion
mixer designs with their unwanted… |
42 Mc Band to 88 Mc Band retrofit Converter Project - Before World War II the FM
radio band was just below 50 Mc. Read all about it. If you have such a radio,
you might want to build this converter. It will let your old set
receive….(electronic schematic / circuit added 4/02) |
45-860MHz Radio receiver Based on UV916-tuner - This receiver use a TV-tuner, a
simple radio-circuit and a interface to a computer. computer control (set)
receiving frequency from 45-860MHz. purpose of this project is to learn about
tuners, it's a pre-project for my Spectrum analyzer project. UV916 or UV918 tuner is
easy to find in broke TV or VCR:s. It is a common tuner(added 4/05) |
49MHz Walkie Talkie - Lots of people are requesting walkie-talkie and RF remote
control schematics, so here is some. Building se circuits needs special equipment and
expertise in RF circuits. If you are going to experiment with se circuits, please note
that I did not build.... [Peter Jakab, Electrical Engineer, Engineer of Informatics] |
50 MHz to 146 MHz Converter - amateur radio construction projects…. [from Peter
Parker's website] |
50 Ohm Long Line Receiver & Driver - AS028 Jenson Transformer Application Note
(app note 6/07) |
8 Channel RF Remote Control - This is an 8 Channel RF Remote Transmitter and
Receiver that will allow to remotely control various electronic projects. RF Remote
Control provides 2 latched and 6 momentary outputs that could be used to control your
favorite devices such as amplifier, robotic devices, RC cars, computer, home appliances,
lamps and many other cool gadgets. ….(electronic schematic added 11/08) |
80 Meter CW ARDF Receiver - (design added 8/03) |
80m Direct Conversion Receiver - amateur radio construction projects…. [from
Peter Parker's website] |
8644A-2 Air Navigation Receiver Testing With The Agilent 8644A - Agilent
Application Note (added 2/06) |
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] |
A GPS Receiver Based Frequency Standard - Frequency accuracy has been a topic of
special interest to many amateurs and experimenters since the early days of radio.
Until recently, the best frequency standard available to most hams was a crystal
oscillator carefully adjusted to zero-beat.... [By Brooks Shera, W5OJM] |
A Low Cost 4Mbps IRDA Receiver in MS8 & SO-8 Package LT1328 - DN152 Design
Notes (Linear Technology) (app note added 1/06) |
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) |
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] |
Aircraft Receiver - The Passive Aircraft Receiver is basically an amplified
"crystal radio" designed to receive nearby AM aircraft transmissions. The "passive" design
uses no oscillators or other RF circuitry capable of interfering with aircraft
communications so it should be fine inside the cabin of the aircraft. Nevertheless, check
the regulations before using this receiver on a commercial airliner....(design added 8/03)
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Alternative Power Source for Magellan GPS Receivers - (circuit / schematic
design added 6/06) |
AM BCB Radio Receiver - (design added 8/03) |
AM BroADCast Band Regenerative Receiver just two transistors! - amateur radio
construction projects….circuit only, no description given…. [from Peter Parker's website] |
AM Receiver - This is a compact three transistor, regenerative receiver with
fixed feedback. It is similar in principle to the ZN414 radio IC which is now replaced by
the MK484. The design is simple and sensitivity and selectivity of the receiver are good….
[Design by Andy Collison] |
AM Receiver for Aircraft Communications - This receiver is controlled by a
Frequency Synthesizer Circuit. The receiver is VERY stable, low noise-level and easy
to build and tune… |
AM Receiver with Quadrature Mixer - This circuit is for a superheterodyne
receiver where the image frequency is suppressed without the use of an input filter.
Instead, it uses two NE(SA)612 type mixer ICs that each work 90….must register on this
site.... [Published in Elecktor July/August 2010] |
Amazing All Band Receiver - (design added 8/03) |
AM-Receiver for Aircraft communication 118.250MHz - (electronic circuit added
4/05) |
An Optimized DCE Interface for V.34 Modems using the DS8933 & DS8934 Line Drivers &
Receivers - National Semiconductor Application Note....[App Note] |
AN-1020: Demodulating with the LMX2240 150 MHz IF Receiver - National
Semiconductor Application Note....[App Note] |
AN-1034: An Optimized DCE Interface for V.34 Modems using the DS8933 & DS8934 Line Drivers
& Receivers - National Semiconductor Application Note....[App Note] |
AN-146: FM Remote Speaker System - National Semiconductor Application Note
(app note added 07/08/09) |
AN-214: Transmission Line Drivers & Receivers for TIA/EIA Standards RS-422 & RS-423 -
National Semiconductor Application Note....[App Note] |
AN-302: Exploit Digital Advantages in an SSB Receiver - AN-302 Analog Devices
Application Notes....[App Note] |
AN-759: Comparing EIA-485 & EIA-422-A Line Drivers & Receivers in Multipoint Applications
- National Semiconductor Application Note (app note added 2/06) |
AN860: RFRXD0420 ASK Receiver Reference Design - Microchip Application Note
Published 27-Dec-02....[App Note] |
Automicro RX3302 receiver module photo - ….(Circuit design added 04/09) [Peter
Jakab, Electrical Engineer, Engineer of Informatics] |
Automicro RX3304 receiver module schematic - ….(design added 04/09) [Peter Jakab,
Electrical Engineer, Engineer of Informatics] |
Aviation Band Receiver - Figure 1 shows a schematic diagram of the Aviation
Receiver--a super heterodyne AM (Amplitude Modulated) unit built around four IC's: an
NE602 double balanced mixer (U1), an MC1350 linear IF amplifier (U2), an LM324 quad op-amp
(U3), and an LM386 audio amplifier (U4). In operation, an antenna that plugs into J1 picks
up the AM signal. That signal is then coupled through C1 to a three-section, tuned-filter
network consisting of L1-L5 and C2-C6.... [Tony van Roon's circuit] |
AVR Based Serial Port IR Receiver - (circuit / schematic design added 6/06)
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Receivers: #-A
B-H
I-Q
R-S
T-Z |