Circuits & Schematics - 4

Mike Irwin EDN Professional-audio equipment commonly uses Analog Devices‘ high-performance, quad-voltage-controlled SSM2164 attenuator. The control response is 30 dB/V, with 0 V producing unity gain. Attenuation increases as the applied ...

Panagiotis Kosioris EDN Several safety-critical solenoids in a laser-measurement system on an automotive-assembly line required protection from internal overheating during normal operation. After a 60-sec activation, the solenoids required 180 sec ...

Alfredo Saab EDN Temperature sensors must sometimes operate at locations whose return potentials differ considerably from that of the data-acquisition system's common that is, equipotential ground. In consequence, the temperature sensor's ...

Vijay Deshpande EDN A solar day lamp is a simple, inexpensive device for bringing “daylight” to dark interior spaces whenever the sun is shining. This article provides complete instructions for designing lamps using both passive and ...

by Martyn Mckinney EDN Although the ubiquitous LM386 IC was designed to be used as an audio amplifier, it has a number of undocumented characteristics that can be exploited to create simple radio receiver circuits that deliver surprisingly high ...

Bill Schweber Electronic Design A family of PTC thermistors conquers the calibration and linearity errors associated with conventional NTC temperature devices. Temperature is the most widely measured physical variable and designers have many ...

William Lepkowski EDN Many low-dropout voltage regulators include an enable-input pin that can also serve as an inexpensive alternative to a voltage-supervisor IC. Although the enable pin normally serves as a means of shutting down the ...

Grant Smith EDN Powering 20 to 30 white LEDs from three alkaline cells presents an interesting problem for the conventional boost converter. The required boost ratio and duty factor are simply impractical. If you are determined to design with ...

Kyle Lawrence, Analog Devices Design Note 570 Introduction The LED backlights in automotive heads-up displays, infotainment systems, and dashboard lighting must be bright enough to compete with direct sunlight streaming into a car during the day, ...

Gregory Mirsky EDN Many switch-mode power supplies use “kick-start” circuits to initialize their offline operation. These circuits may be simple resistors, such as IRIS4015 , or more complicated arrangements built with bipolar ...