now the CMF55 seem to be rated at 1/2 watt - although i also saw a spec sheet rating them at 1/4 watt. i guess it's never a problem if a resistor can dissipate more W, right?
me learning a lot about resistors these days
on a different note i found a nice cap for C1. i was looking for a very small can with as much uF as possible as I'm trying to fit this in a rather small enclosure. i think for the size (25mm dia, 30mm height) this one with 12ooo uF is a good fit: Cornell Dubilier 381LX
me learning a lot about resistors these days
on a different note i found a nice cap for C1. i was looking for a very small can with as much uF as possible as I'm trying to fit this in a rather small enclosure. i think for the size (25mm dia, 30mm height) this one with 12ooo uF is a good fit: Cornell Dubilier 381LX
other reasons , to keep output impedance lowest possible
thanks for the tip in regards to lowering the resistors for low impedance. i installed some amtrans 39ohms and not sure if it made a difference but does allow me to try some low input impedance power amps now.
that is pretty much "generic LED"
say that rail voltage is 15V
for calculus , taking 2V for LED is precise enough
sat that we want 5mA through LED (prett bright in most cases)
so R=(Urail-Uled)/Iled
R= 13V/5mA = 2600R ........ first standard is 2K7
dissipation through resistor is P=I^2 x R = 5mA^2 x 2K7 =67.5mW , so regular small resistor is strong enough
say that rail voltage is 15V
for calculus , taking 2V for LED is precise enough
sat that we want 5mA through LED (prett bright in most cases)
so R=(Urail-Uled)/Iled
R= 13V/5mA = 2600R ........ first standard is 2K7
dissipation through resistor is P=I^2 x R = 5mA^2 x 2K7 =67.5mW , so regular small resistor is strong enough
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