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Receiver Circuits   Page 1
Receivers:  #-A      B-H      I-Q      R-S      T-Z

Last Updated on: Friday, October 03, 2014 10:38 AM


Circuits Designed by Dave Johnson, P.E. :
  • 175KHz INDUCTIVE PULSE RECEIVER
    This circuit is discussed in more detain 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.

  • 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. 

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
$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)

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]
175kHz Inductive Pulse Receiver -  This circuit is discussed in more detain 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)
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)
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)

Receivers:  #-A        B-H        I-Q        R-S        T-Z

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