T.K. Hareendran Electronic Design Many robotic applications require a sensor to detect close or very close obstacles. Typically, reflective-type infrared sensors are used for this task. But the circuit in the figure 1 shows an infrared close-object ...
10-12-2018
Luca Bruno EDN A common method for driving multiple power LEDs is through two parallel strings. This inexpensive and less critical driver circuit can provide a lower voltage. However, the driver circuit must deliver twice the current of other ...
27-11-2018
Robert Bell EDN Figure 1 shows a simple, stand-alone overvoltage detector. The intent of the circuit is to monitor a voltage, V MON , and set the output, V OUT , high when the monitored voltage exceeds a preset threshold. The minimum allowable ...
07-11-2018
Dennis Eichenberg EDN The circuit in Figure 1 represents a simple and inexpensive way to provide additional bicycling safety. A conventional bicycle-generator lighting system works with the circuit to provide safety lighting for several minutes ...
07-11-2018
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