Driver M140

Hello,

I just wanted to check that i got the right components and if i gain anything from using a different capacitor.

LM317T
1 Ohm 2 watt resistor
Potentiometer 2,2 Ohm 3w
47µF Capacitor
Do i need a diode if im going to permenetly hook it up to a Relay supplyed with 5V?

Is 5V enough? I could supply with 7V i guess

How fast can the driver be turned on and off without killing the diode?

Ive got 2 (2 of each) different capacitors one made for audio products and a normal one, do i gain any by using the audio made one. Is it better to use 4x 47µF or 1?

Audio capacitor: UFG1E470MEM 47uF 25V 85C
Normal capacitor: El.lyt 47uF 25V 85C ø5x11mm

And if Dtr sees this, How long does the shipping take to sweden?

-Victor

Well, you definitely can't run a linear driver and a m140 off of 5 volts. 7 volts might work, depending on how much the driver drops, but >7V would be best.

As for the rest, I'll leave that for more knowledgeable folks.

ChaosLord said:

Well, you definitely can't run a linear driver and a m140 off of 5 volts. 7 volts might work, depending on how much the driver drops, but >7V would be best.

As for the rest, I'll leave that for more knowledgeable folks.

Click to expand...

Thanks for the reply
12V good enough?

-Victor

Yup, in fact you could probably get away with 9V. If you use 12V, you should heatsink the ic.

ChaosLord said:

Yup, in fact you could probably get away with 9V. If you use 12V, you should heatsink the ic.

Click to expand...

Good enough?