EDN

Simple, precise, bi-directional current source

A bi-directional current source for a grounded load will always have some complication in its construction. The improved Howland Current Pump as shown in Figure 1 is the most frequent choice for this ...
Business Wire

Toshiba Adds New eFuse IC, an Electronic Fuse for Repeated Use That Offers Adjustable Overvoltage Protection and FLAG Signal Output Function

TOKYO--(BUSINESS WIRE)--Toshiba Electronic Devices & Storage Corporation ("Toshiba") has added a new eFuse IC, “TCKE712BNL,” to its line-up of eFuse ICs for repeated use that support functions to ...
Electronic Design

Understanding the Right-Half-Plane Zero Part 1

The small signal analysis of power converters reveals the presence of poles and zeros in the transfer functions of interest (e.g., the control to the output variable). The zeros occur in the numerator ...
EDN

Designing fast, isolated microamp current sources: Part 1

In order to test and characterize optical front end circuits, a controllable, high bandwidth, microamp-level current source is needed. However, most optocouplers on the market have large CTR variation ...
Electronic Design

Testing Open- and Closed-Loop Current Sensors

Open-loop current sensors have a definite price advantage over closed-loop counterparts. While you can use them in drive applications where torque accuracy isn't demanding — such as pump and fan ...