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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

led circuit

  1. D

    Fixing the 7-segment LED of Sony sound system

    I have one Sony 5.1 sound system but its 7-segment LED display is not working properly because the numbers (volume level) are not showing up completely and all the segments don't light up. Sometimes, the whole display shows nothing at all. I need to know whether the LED driver IC (PTC 6955) is...
  2. K

    what resisitors for these fil. leds??

    hey! im looking to wire up a string of these filament LEDs,they are 3v/120mA,3v/300mA,6500k. these are chinesium so please take an extra 5% margin on the safety,so they dont burn out. that would cut power further down the line,yes? if i want to make a string of 10 of the 300mA's,that means it...

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