Month: October 2010

SCR And Triac Triggering Circuit With A Positive Power Supply

The control-circuit output current has to be amplified when the gate current required to trigger the device is higher than the control-circuit output current capability. For example, A lot of MCUs feature output pins with a current capability around 30 mA today. With IGT, they can switch Triacs safely up to 15 to 20 mA. Below are two solution if […]

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Category: Control and Monitoring, Power Supply Tags:

Differential Current Sensing Inside H Bridge

A differential current sensing that is inserted inside a H bridge circuit. is shown in the schematic diagram below. This circuit is one example of AD8205 application. The AD8205 measures current in both directions as the motor changes direction and H-bridge switches. This circuit has high accuracy in current measurement because AD8205 is placed in the middle of the H-bridge. […]

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Category: Testing and Measurement Tags:
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