elektor tun
@millwood - are you really sure of what you said? Infact are you sure about anything you have been saying?
I am not confronting you - I just want you to cool down and look/verify once more whatever you say.
Instead of rattling at me for this reply, just calm down and have a look at the datasheet.
Please.
Added after 5 minutes:
Audioguru said:
Some headphones are 8 ohms per ear and are 4 ohms when in parallel. Half the 1.5V battery across 4 ohms results in a current in the output transistor of 188mA. A BC547 has a max allowed current of only 100mA so the higher current BC337 is used..
My point exactly! I was asking if I could:
1. Replace all the BC547 with BC337 instead
or
2. Put a limiting resitor to limit current to sat 75mA and replace the BC337 with BC547 instead.
Do let me know the pros and cons.
The reason is very simple - unified BOM.
Also do you know a better circuit for the same?
I would actually use two o fthese and finally replace the BC337 power stage" with a TIP127 so that I can run a small speaker
What do you think about this?