PC Based Thermometer Based on Dallas DS1621:  (electronic circuit added 4/05)

PC Board Layout Checklist: DC-DC Converters / AB-11:  Fairchild Application Notes / (app note added 6/06)

PC Board Layout Eases High Speed Transmission:  11/08/01 EDN-Design Ideas / (added 5/02) / As digital techniques move to higher speeds, designers become aware of the need to treat pc-board traces as RF transmission lines. In these lines, you strive to hold the line impedance, Z0, to a constant value—typically, 50Ω—and to terminate the line with the same impedance. Data families such as ECL, PECL, and LVDS....  

PC Card Power Management Techniques:  DN76  Design Notes (Linear Technology) (app note added 1/06)

PC Clock Offerings:  Pericom Semiconductor Application Brief # 020 (app note added 02/05)

PC Communicates with AD 2101 DSP µP :  01/19/95 EDN-Design Ideas / (added 11/05)

PC Configurable RLC Resonator Yields Single Output Filter :  08/07)/03  EDN-Design Ideas / (schematic / circuit added 11/03) This Design Idea presents a versatile filter circuit for low-power-consumption instrumentation that you can program from your PC using the parallel port. The circuit uses analog switches and latches instead of digital potentiometers for the digital control (figures 1 and 2). By running simple software code on the PC, you can configure a single robust design to work as a lowpass, highpass, or b......

PC Controlled Voltage or Current Source:  Fair Waring, site contains annoying popups.  This project was begun as a means to charge and cycle NiCad batteries but has become a versatile tool for experiments requiring either a controlled voltage up to +30V and/or a current of +/2.5 Amps. (added 5/05)

PC Controls Inexpensive Waveform Generator:  06/06/96 EDN Design Ideas  / (added 11/0e)  The circuit in Figure 1 is a simple cost-effective waveform generator using PC control. You calculate the digital image of the desired waveform and store it in the 32k X 8-bit RAM (62256) through the 74HCT245 data buffer and the 16-bit local-address bus generator built with the 74LS393 binary counters.

PC Controls Light Dimmer:  08/19/99 EDN-Design Ideas / (added 5/02) Circuit design idea from EDN Magazine to control one light dimming from PC

PC Electrically Isolated RS422 Interface using SN75176B or MAX485:  (electronic circuit added 4/05)

PC electrically isolated RS485 interface using MAX487 or SN75176B:  (diagram added 2/07)

PC Hardware Monitor Reports the Weather:  01/18/01 EDN Design Ideas / (addes 09/05)  You usually use PC hardware monitors to keep a close eye on power-supply voltage levels, the speed of system cooling fans, and even the temperature of the CPU. Until fairly recently, this level of system monitoring was reserved for high-end servers running mission-critical applications. However, now that low-cost hardware monitoring AS ICs are available, advanced hardware monitoring has become a standard feature in most new PCs. And hardware monitors are now finding their way into diverse applications, such as weather stations (Figure 1).