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Last Updated:
Monday, November 24, 2008 04:33 AM |
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Featured Circuit of the Week |
Circuit Forms Ideal Diode Function
This circuit uses a low power op amp and a p-channel FET to form a diode function with a very low 0.05 volt voltage drop. With the selected FET, the circuit can handle up to 2 amps of current. Higher currents are possible with a FET with a lower channel
resistance. The total current drawn by the circuit during operation is a low 20 microamps. The maximum voltage is 15v. |
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All Circuits of the Week |
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Featured Circuit Last Week |
White LED Night Light
As many of you know, I have a pet peeve with poorly made LED night lights. Often, the light from the LED quickly fades, so within months, the light is useless. I have posted
several versions of modified night lights using higher quality components. This circuit is yet another version, which produces much more light than those other designs. The circuit brings together two high power white LEDs made by Cree with a compact AC
to DC power supply from Bias Power..... |
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All Circuits of the Week |
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Dave's other websites to visit: |
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collection of resources for inventors,
hobbyists, scientists & engineers |
resource portal for information
regarding renewable, alternative
or sustainable energy |
Dave Johnson & Associates -
consulting services for new products from conception to production or improving the
cost & performance of existing products |
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David A. Johnson, P.E. is an electronics engineer with over 30 years practical experience in the areas of analog & digital design, fiber optics and RFID.
Electronics is his vocation, hobby and passion. He is a published author with articles and designs in EDN, Electric Design, Midnight Engineering and Popular Electronics. Throughout his career, Dave's imaginative approach to design has resulted in applying new technologies in
creative and cost saving ways. |
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