Fri Jan 05, 2018 7:07 pm
Fri Jan 05, 2018 10:26 pm
Ben79 wrote:I'm wondering what kind of current draw the circuit would have running 4 tl072 opamps for a 3 spring medium length tank.
Ben79 wrote:I know I need a centre-tapped transformer, some are marked 15-0 15-0, would that enable me to achieve the same result?
Ben79 wrote:They are also sometimes marked in milliamps and sometimes VA. I know volt amps is AC power rating but I'm not sure what kind of value I should be looking for.
Any other advice? Should I go for a toroidal to reduce noise?
Is this what I need? http://www.ebay.co.uk/itm/2X15V-30Va-To ... SwVNxaAQbh
I guess using regulators means I can shop around for a cheap transformer that doesn't need to be 15v on the button.
Thanks.
Sat Jan 06, 2018 1:28 pm
Sat Jan 06, 2018 1:42 pm
Sun Jan 07, 2018 11:23 am
Tue Jan 09, 2018 10:44 pm
Thu Jan 11, 2018 12:54 pm
Thu Jan 11, 2018 1:16 pm
Ben79 wrote:It doesn't seem to matter how many times I try, I can't get my head round the real world meaning of impedance.
Sat Jan 13, 2018 3:11 pm
Sat Jan 13, 2018 3:56 pm
Ben79 wrote:I appreciate your bold effort to help me here!
I've read that over a few times and I'm starting to get it. So impedance is important to know because if it's too low then too much current will flow and whatever is delivering it will overheat and fail....is that correct? I'm not sure what 'reflected' means in this context though.
And audiowise it's useful because it....can tell you how much resistance and hence loss there will be to certain frequency ranges?
Mon Jan 15, 2018 1:03 am
Wed Jan 17, 2018 1:10 pm