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Timers and Counters Circuits,
Page 1c Timers & Counters: Next #-APrevious #-AB-EF-LM-S T-Z Last Updated on:
Friday, March 12, 2010 12:07 PM
Circuits
Designed by Dave Johnson, P.E. :
555
Timer Forms Simple PWM Motor Controller
Using a CMOS version of the 555 timer, this circuit can be used to control the speed
of a motor by adjusting the duty cycle of the pulses sent to the motor. (added 7/06)
Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
Air Pressure Sensor: a small project box (approximately 65x40mm), and is
powered from a 12V AC plugpack. (added 9/04)
AN19 Component Reliability: Zetec Semiconductors - Applications Notes
- This note introduces basic reliability theory, failure rate analysis, and product
qualification methods, and includes sample data and FITs values for a variety of test
methods. (app note added 2/06)
AN-347: Shielding and Guarding: AN-347 - Analog Devices Application Notes
(app note added 6/06) How to Exclude Interference-Type Noise. What to do and Why
to do it-A Rational Approach
AN-349: Keys to Longer Life for CMOS: AN-349 - Analog Devices Application
Notes (app note added 6/06) Here's How CMOS Can be Protected Against Abuse
AN35 High-Side Current Sensing: Considerations and Applications for High-Side Current
Monitoring: Zetec Semiconductors - Applications Notes - A guide
for using the ZXCT range of products. Contained within the note are application ideas
for extended supply ranges, a circuit for bi-directional current sensing and an
over-current/short circuit protection circuit. Now updated and contained within AN39
(app note added 2/06)
AN39 Current Measurement Applications Handbook: Zetec Semiconductors -
Applications Notes - This applications handbook explores how the requirements affect
the design for AC and DC current measurement and the implications on cost and
performance for different approaches. (app note added 2/06)
