Simple Mouse Smart card programmer - This "SimpleMouse"
Smartcardprogrammer can be used to read and write most of all async -
Smartcards (Processorcards), including the new "Hornet and +1" DPSC΄s in
update and reprogramming mode.
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Simple Mouse Smartcard Programmer Circuit - |
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Simple PC Data Acquisition Circuit - If you need to add simple
data acquisition capabilities to your PC, then look no further than the
Analog Interface Unit.….(design added 08/08) |
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Simple PC Thermometer - In this article building of a simple
thermometer for PC will be described. The unit is extremely simple and
cheap to build. You will only need one NTC resistor, one diode and
capacitor and serial port connector….(electronic circuit added 11/05)
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Simple Printer Emulator Adapter - (electronic circuit added
4/05) |
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Simple Radio Clock for PC's - The heart of the device is a EM2S
receiver module and matching antenna. The two are matched, so a mixing a
60kHz receiver board suitable for the MSF and WWVB signals with a 77.5kHz
antenna and vice versa....(electronic circuit added 09/09/09) |
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[ad-DAJ-FS-split.htm]
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Simple RS-232 Serial Port Buffer Circuit - (design circuit added 8/02)
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Simple RS232C Level Converter using Transistors - Cheap and easy circuit for
converting TTL logic to RS232C level using small signal transistors. (electronic
circuit added 4/05) |
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Simple RS422 Converter for Minilogger - Build a simple RS422 converter for
the Minilogger. (circuit added 09/09) |
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Simple Software I2C Routine for the COP8 - National Semiconductor
Application Note (app note added 6/06) |
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Simple Steering Wheel - Simple steering wheel for your PC (circuit added
8/06) |
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Simple technique makes low-cost PC-Board shields - 19-Feb-04 Issue of EDN
Many pc-board assemblies require shields to reduce susceptibility to interference from
electromagnetic fields. A classic example is a radio receiver, in which the front end
usually needs high isolation from the tuning synthesizer. Historically, shields for
low-volume or low-cost applications involve trade-offs.... [Design Idea by Steve
Hageman, Windsor, CA] |
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Simple Wireless Radio Data Link - This is a description of a very simple
unit designed and constructed for use as a wireless data connection between two nearby
computers. The error rate is excellent over short runs, and the transmission speed
means that a useful PPP link can be established between the machines. Which are, of
course, running Linux.... (added 4/05) |
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Simplified Analog Input Schematic - This circuit is a track and hold. The
idea is that the input waveform may reach a peak at any instant as the drummer strikes
the pad. When that occurs, the capacitor is charged to the peak input voltage. There
is only one A/D converter (ADC0804, see the Main CPU section schematic), and it takes
time for it to convert an input voltage to a 8-bit code. No matter....(electronic
circuit added 4/05) |
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Simplified PC Connections for Gpib Instruments - Aligent Application Note
(app note added4/08) |
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Simulate input offset current for current mirrors - 24-Jun-04 Issue of EDN
Simulating the output-offset current of a current mirror is straightforward. You
simply have to apply an input current, measure the output current, and calculate the
difference. This output-offset current, however, is not equal to the
input-offset current, especially when the circuit is not a 1-to-1 mirror.... [Design
Idea by Johan Bauwelinck, Gent University, Gent, Belgium] |
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Single µC pin makes half duplex RS 232C - 08/05/99 EDN-Design Ideas In
many µC designs, nearly all the I/O pins are occupied. If only one I/O pin is
available, the circuit in Figure 1 can help you implement a serial RS-232C interface.
For many purposes, half-duplex operation using a software-driven RS-232C interface
provides a good communications link. Many µCs have open-drain I/O pins,....[Design
Idea added 5/03] EDN is migrating links. This link is not verified. Search the
"title" EDN for new link. |
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Single board supports two bus widths - 01/04/96 EDN-Design Ideas The
design in Figure 1 allows for a single board to support both an 8- and a 16-bit bus
width. The 8-bit Am186EM µC would use both SRAMs and have0 Ohm resistors or jumpers
connecting A17 and WHB to the SRAMs. The 16-bit Am188EM µC would use a single SRAM and
have0 Ohm resistors or jumpers connecting A0 to the SRAM and WHB to ground. A high or
low level on the BYTE input of the Am29F200 flash memory configures the device as
either 256k×8 or 128k×16 bits, respectively, as the figure shows. A 40-MHz Am186EM µC
would provide 5.35 VAX MIPS (Visual C++ v.1.52]using.... [Design Idea by John Hansen,
Advanced Micro Devices Austin, TX] |
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Single Interface Chip Controls Two Smart CarDS - DN289 Design Notes
(Linear Technology) (app note added 1/06) |
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Single Supply RS-232 Interface for Bipolar to D Converters - DN29
Design Notes (Linear Technology) (app note added 6/06) |
