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.
just use a dmm , one 3.3K resistor and a 12V supply to check out. Connect the 12V + supply to resistor. other side of resistor can be connected to the cathode of diode (marked side) the second side of diode can return to -ve of supply.
use DMM as DC voltmeter and measure across the diode
if it is zenor of less than 12V type, the value would be read
if it is ordinary diode, it would not conduct at 12V, and the meter reads full supply voltage.
this solves you problem rather than imagination.
yes, some appear to be 4148
they were handwritten, why , i wonder
as these components are low wattage
you may use resistor little on higher side
like 3.9K, 4.7K etc
anyway you may use two nos of 2.2K 9n series to make 4.4K
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.