help making a amplfyer? Answered

I was going to build a amplfyer from this instructable but had no BC548 or 2N3904 transistors. I did a google search to find out what could also work. I found a website stating simmalar transistors. On this website, at the related transistors section it states a few simmalar transistors. What transistors could I use instead of the BC548 or the 2N3904?

Question by David97 7 years ago  |  last reply 7 years ago


Need help bulding a A Class single transistor amplifer?

I've been looking at getting a eletronic duck call but what I have been looking at hasn't been very good qualty. So I thought of getting a mp3 player and a bulding a amplfyer to call in ducks. I want to bulid a simple A type amplfyer using one transistor. that can run off a Ipod. I saw a you tube video of what I would like to make. If anyone knows how to build a simple amp like or simmalar please: A: Give me a curket dyagram. B: Give a link to me, to a curket dyagram or instructable. C: Please say if you have any helpfull info. Thanks for reading and /or helping.

Question by David97 8 years ago  |  last reply 7 years ago


How many whatts is this person using? Answered

I want to build this amplfyer but have no idea what wattage speeker they are using. Can any one tell me (I already know it is 8ohms)?

Question by David97 7 years ago  |  last reply 7 years ago


C327 instead of BC327 transistor help?

I went to buy some transistors and the person in the shop handed me C327 insted of BC327. Would C327 work instead of BC327 in a amplfyer circuit.

Question by David97 7 years ago  |  last reply 7 years ago


Could I use BC547 instead of BC548?

When building this instructable I relised I had no BC548 transistors. Could I use BC547 insted. Here is a link to both datasheets. BC548 BC547

Question by David97 7 years ago  |  last reply 1 year ago


USB battery chardger?

I was going to build a amplfyer and because it was mainley going to be pluged into a computer I thought that it would be a good idea to have it chardge off usb. I want to chardge two aaa batterys by usb. Are there any instructables showing how to make a dual aaa usb chardger?

Question by David97 7 years ago