Monthly Archives: April 2010

Unipolar 4 Phase Stepper Motor Controller

Posted on April 27, 2010 by Rust
Unipolar 4 Phase Stepper Motor Controller

To sense and control the current in stepping motors and other similar devices, we can use a linear integrated circuit like L6506. The chip set forms a constant current drive for inductive loads and performs all the interface functions from … Continue reading →

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Precision Photodiode Comparator

Posted on April 27, 2010 by Rust
Precision Photodiode Comparator

This photodiode signal conditioning circuit is sensitive to light signal, suitable for interfacing digital serial signal. The biasing of the LM111 noninverting input is matched to the diode’s dark output, so it should be very sensitive. [Source: National Semiconductor Application … Continue reading →

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ON/OFF Power Control with Single Pushbutton

Posted on April 27, 2010 by Rust
ON OFF Power Control with Single Pushbutton

Today, simplicity and minimum controls is required for design of a handheld device. It will be very useful if a circuit allow us to turn the power on or of with a single push button. A single-pushbutton power control circuit … Continue reading →

Posted in Control Electronics, Power Supply | Tagged | Comments Off
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