friedtransistor wrote:Personally, I like a 2n2222 with a 10k from positive to collector, 100k from collector to base, 15k or 22k from base to ground, emitter to ground, 0.1u from in to base, and 4.7u from collector to out. Just a suggestion

thx I will give that ago

Hi thx for your reply. I was given a load of transistors from a old guy who repaired tvs, to many to mention zxt300 bfy50 and many more and I just wanted to say grab a bfy50 and build a circuit boost or whatever. I've read some of the links previous except one I'm going to look at now.

Thx I await eagerly.

Please a little help as not to pull out the last hairs I have left on my head lol

Hi all I'm a 43 yr old newbie trying to get my head around basing lol. Please help lol I have blah blah transistor and want to bias it using a standard 9v battery what do I need off the data sheet I know I need hfe but don't know the where to go to start calculations lol I've read I need half the vo...