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.
often it's rated in milliwatts out. A common value would be between 200mw to 500mw for a good many headphone jacks. A few of the high-end receivers/amps may yield as high as a couple watts/channel.
A headphone could be 8 ohms or 600 ohms. So the voltage isn't rated, the power into a certain resistance is instead. Usually the output has a series 180 ohm resistor to limit the current. Then if the source has a 10V output, an 8 ohm headphone gets 23mW and a 600 ohm headphone gets 99mw.
If the current-limiting resistor isn't there then the 8 ohm headphone will get 12.5W and blow up (and your ears too). The 600 ohm headphone will get "only" 167mW which is pretty 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.
