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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Ping for Andrew Gabriel
Hi Andrew ... in the post below you asked me for data on the LED
Standard W10 Silicon Bridge Rectifiers ... ----------------- Can you point to the datasheet for your LEDs? My calculation assumed 40mA non-repetitive peak current. What design constraints have you got (such as max power dissipation per indicator)? Here is datasheet on Br Rectifiers ... http://pdf.datasheetcatalog.com/data...y/mXyzsrux.pdf LED are standard 5mm LED (100mcd) ... forward Voltage 1.8-2.2V 20mA nominal current, 40mA maximum. Capacitor are X2 rated, Polypropylene MPX 0.47uF Withstand Voltage 275V AC Rating Voltage 250V AC No specific design constraint on display, just something that will illuminate them. I have purchased the capacitors, Br Rectifiers & LED so keen not to waste these ... Were you able to take a look at cct to see if there is suitable a resistor or modification that allows use of these components, while reducing the risk you (thankfully ) pointed out of blowing the LED's One suggestion was to increase resistor to 680R Welcome your advice. -- UK SelfBuild: http://uk.groups.yahoo.com/group/UK_Selfbuild/ |
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