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.
I intend to build a VU meter with a lot of leds, about 30 leds. My question is if I can use 3 LM3915 in cascade because in the datasheet I see only 2 CIs in cascade.
The LM3915 has a 30dB range. Three of them will have a 90dB range and if your quietest time is 40dB then the loudest indication is 130db which is extremely loud.
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.