Matt Kornblum EDN The circuit in Figure 1 converts a 10 V analog voltage representing an angle between θ MIN and θ MAX and emits a voltage equal to 10 cosθ. This circuit can have an accuracy of better than 1% over 120 or better ...
25-10-2018
John R Ambrose EDN Demodulators, directional circuits, and other electronics applications often need two sine waves with a 90 difference in phase a sine wave and its cosine wave. Engineers typically use analog filters to create the phase shift. ...
25-10-2018
Mark Cherry EDN Portable systems often include circuitry that derives power from an external source, such as USB. When the system disconnects from the USB supply, a battery takes over and supplies current via a dc/dc converter. A diode-OR ...
18-10-2018
Dave Wuchinich EDN A typical piezoelectric sensor comprises a disk of PZT-5A ceramic material with metallized electrodes on its surfaces. Applying electrically conductive epoxy to the electrodes connects external wiring to the sensor. An insulating ...
16-10-2018
Stephen Woodward EDN The enduring simplicity of PWM DACs will always earn them a place in the designer’s cookbook, but slow response time and the problem of PWM ripple tend to limit their appeal and utility. The usual way of attenuating PWM ...
09-10-2018
Martin Rowe EDN When converting a negative-output power supply to one with less-negative output, you must ensure that variations in input voltage don’t affect the output voltage. All such supplies include an internal reference voltage that ...
19-09-2018