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R5000 Receiver Interface - (electronic circuit added 4/05) |
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Radio Clock For Pc's - Intersil Application Block Diagram (app note added 6/06) |
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Raid Controller Card - A few time ago I decided to create a media center box to
replace my DVD player, satellite receiver, VCR and my kid's Play Station 2, to one
device. So, I made a core 2 duo processor system that actually replaced with succeed,
all my electronic devices. The only thing that was missing was a remote control to
switch On/Off my Media Center. After I searched on the net to buy a complete remote
control system, I saw that the price was a little bit high (about 90 euros). I checked
my stuff to find my old 7-in-one remote control that I had bought 2 years ago and I
started to build my own remote control receiver circuit. ….(electronic schematic added
11/08) |
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Rc5 Infrared Remote Control Receiver For Media Centers - Fairchild Application
Notes / (app note added 6/06) |
|
Rc5051 Converter Design Template / Abr-6001 - Fairchild Application Notes / (app
note added 6/06) |
|
Rc5051 Dc-Dc Converter / Abr-6002 - The diagram below shows 5 switches connected
to the 5 input lines of the parallel port. An external 5 volt power supply is used to
provide high logic levels to the input pins when the switches are open. Three 1.5 volt
batteries in series can be used to obtain 4.5 volts which is close enough. The 330 ohm
resistors ….(circuit diagram added 6/07) |
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Reading Data From The Parallel Port - (Design Ideas - EDN, 06/08/2006) Versatile
precision rectifier also delivers full-wave output. (electronic design idea added
9/2008) |
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Rectifier Tracks Positive And Negative Peaks - Pericom Semiconductor Application
Note # 069 (app note added 02/05) |
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Reference Board User Guide For Pi7c8152 - DN71 Design Notes (Linear Technology)
(app note added 6/06) |
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Regulator Circuit Generates Both 3.3v And 5v Outputs From 3.3v Or 5v To Run Computers
And Rs-232 - Control all your devices from the PC. This infrared remote control
transmitter can be controlled from the PC serial port. It speaks different remote
control formats, like the Philips RC-5 standard and can be tailored to other specific
types…..(design added 05/09) |
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Remote Control Transmitter - Control Devices From The PC - National Semiconductor
Application Note (app note added 2/06) |
|
Replacing Dedicated Protocol Controllers With Code Efficient And Configurable
Microcontrollers-Low Speed Can Network Applications - Pericom Semiconductor App
Note # 07)9 (app note added 02/05) |
|
Replacing The Intel 21150 Or Plx Pci6150 With The Pi7c8150 - Pericom Semiconductor
Application Note # 080 (app note added 02/05) |
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Replacing The Plx Pci6150 With The Pi7c8150b - 10/26/95 EDN-Design Ideas / (added
2/06) The circuit in Fig 1a generates repetitive system resets to 68XXX processors.
These resets allow you to troubleshoot power-up problems using a scope instead of a
logic analyzer or storage scope. This reset card, which you can build for less than
$10, consists of a DIP switch, .... |
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Reset Card Eases µP Troubleshooting - 11/20/97 EDN Design Ideas – (added 2/06)
|
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Reset Ics Create Sequenced Or Long Resets - 11/24/99 EDN Design Ideas / (added
2/06) |
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Resistor Implements Half Duplex Rs 232 With Echo - Pericom Semiconductor App Note
# 004 (app note added 02/05) |
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Rgb Video switching - ….(design added 08/08) |
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Rj45 Network Card To Ir Communication - This is a very simple ROM emulator. It can
only "Load and Run", because reduced unnecessary functions and reduced board size, so
it is good for portable use. (added 10/05) |
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Rom Emulator - ASCII format (added 3/03) |
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Rounding Off' A Square Wave - 02/01/96 EDN-Design Ideas / (added 11/05)
|
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Routine Provides Four Com Port Recognition - 05/26/94 EDN Design Ideas / (added
11/05) |
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RS 485 Repeater Extends Standard's Reach - (electronic circuit added 2/07) |
|
RS232 - Lowe Hf-225 Interface - Microchip Application Note Published 1-Apr-99
(app note added 2/06) |
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RS-232 Autobaud For The Pic16c5x Devices - RS232 ports of modern laptops are not
always complying with the original RS232 standard. If RS232 levels are expected to be
+/- 12 volts, most of the time laptops RS232 ports produce in fact +/- 5 volts levels.
For most peripherals, this is not an issue and they are responding as expected.
….(electronic schematic added 11/08) |
|
RS232 Booster - There is a simple way to boost the RS232 weak levels, based on one
of the most common RS232 IC (MAX232). (circuit added 07/07/07) |
|
RS232 Booster - (electronic circuit added 4/05) |
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RS-232 DB-9 switch-To-Flip Between Two Serial Ports - DN75 Design Notes (Linear
Technology) (app note added 1/06) |
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RS-232 Interface Circuits For 3.3v Systems - (electronic circuit added 4/05) |
|
RS-232 Laser Transceiver - (electronic circuit added 4/05) |
|
RS-232 Line Monitor And Loopback Cables - (electronic circuit added 4/05) |
|
RS-232 Overvoltage Protection Circuits - (electronic circuit added 1/03) |
|
RS-232 Port Monitor - (electronic circuit added 4/05) |
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RS-232 Protocol Analyser - (design circuit added 8/02) |
|
RS-232 Serial Port Buffer Circuit - This is simple RS232 Serial to USB Converter
that doesn’t need any further explanations. You can use it for any projects that might
need it. Diagrams for USB and DB-9 female connectors are provided. ….(electronic
schematic added 11/08) |
|
RS232 Serial To USB Converter - (electronic circuit added 4/05) |
|
RS-232 Surge Protection - (electronic circuit added 4/05) |
|
RS-232 To TTL Cable - A simple terminal program on a PC can have a lot of uses.
The hang-up is that most of those uses involve communicating with a device running on
5 volts. I've done several schemes over the years but this one is my favorites.
[img:60e1b47cb8]http://www.circuitdb.com/download.php?fileID=139[/img:60e1b47cb8] So I
built it into a stand-alone box….(circuit design added 06/09) |
|
RS-232 To Ttl Translator - DN30 Design Notes (Linear Technology) (app note added
1/06) |
|
RS-232 Transceiver With Automatic Power Shutdown Control - DN64 Design Notes
(Linear Technology) (app note added 1/06) |
|
RS-232 Transceivers For Hand Held Computers Withstand 10kv Esd - ….(circuit design
added 05/09) |
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RS-232 Xlater - 04/12/01 EDN-Design Ideas / (added 4/02) / RS-485 communications
can provide longer range and better noise immunity than RS-232, as well as multidrop
capability. Because it does not have separate transmit and receive lines, RS-485
requires flow control. RS-232/485 converters often.... |
|
RS-232/485 Converter Has Automatic Flow Control - Microchip Application Note
Published 26-Apr-02 (app note added 2/06) |
|
RS-232/Dali Bridge Interface - (electronic circuit added 4/05) |
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RS-232: Lowe Hf-225 Interface - 02/04/99 EDN-Design Ideas / (added 5/03) You can
obtain longer transmission distances with the RS-232C interface if you use galvanic
isolation between the two linked terminals. Galvanic isolation also eliminates
problems arising from disparate potentials between terminals. Using two MAX860/861 ICs
.... |
|
RS-232c Circuit Has Galvanic Isolation - 10/23/97 EDN-Design Ideas / (added
3/03) |
|
RS-232c Handshake Lines Transfer Data Frames - 09/28/95 EDN-Design Ideas / (added
3/03) RS-232 isolation circuit |
|
RS-232c Interface Meets Telecommunications Safety Specs - National Semiconductor
Application Note (app note added 2/06) |
|
RS-232c Interface With Cop800 - (circuit added 7/02) |
|
RS232c Level Converter - (circuit added 7/02) |
|
RS-232c Level Converter Using Transistors - 10/24/96 EDN-Design Ideas / (added
6/06) -Easy to effect an interface between power MOSFETs and TTL circuits |
|
RS-232c Line Driver Ic Drives Power Mosfets - 11/06/97 EDN-Design Ideas / (added
3/03) |
|
RS-232c Link Monitors Animal Activity - 04/11/96 EDN-Design Ideas / (added 3/03)
|
|
Rs-232c Powers And Reads 8 Bit switch Matrix - 12/04/97 EDN-Design Ideas / (added
5/03) |
|
RS-232c Serial Port Scans Remote Keypad - Brochure with schematic in PDF format /
(added 6/02) |
|
RS-232-To-Rs-232 Port Powered Optical Isolator - (Design Ideas - EDN, 05/29/2008)
A simple RS-232-to-TTL converter tests UARTs using a PC's serial port for power.
(electronic design idea added 9/2008) |
|
RS-232-To-TTLl Converter Tests Uarts With A PC - (electronic circuit added 7/03) |
|
RS485 Like Multi Drop Bus With Half Duplex Serial Protocol - 05/26/94 EDN-Design
Ideas / (added 3/03) RS-485 specifies communications for distances up to 4000 ft.
This limit is the consequence of losses in the twisted pair used to carry the data.
Beyond 4000 ft, skin effect and dielectric losses take their toll, attenuating the
signal beyond use. Fig 1 shows a simple RS-485 repeater.... |
|
RS485 Repeater Extends Standard's Reach - (electronic circuit added 4/05) |
|
RS485-Like Multi-Drop Bus With Half Duplex Serial Protocol - National
Semiconductor Application Note (app note added 2/06) |
