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ezDAC Group Buy Interest?

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#182
For 3A you are going to need to use a different regulator not the LM317/337 they have a max of 1.5A, youll also need to look at toriod specs to find one that has an appropriate VA rating for 3A and 12.3 V ~, so basically youll be at ~ 30VA toriod

Avel Lindberg Part number Y236101 I think would work if you wire it up in parrallel for 115V

you may want someone to verify this though.
 
#183
Also anyone that is going to use the premium BOM, my experince has indicated that it needs a solid 15V DC to work. I was having issues using the ezDual putting out 13.86V DC, it was giving me cutouts. So the ezDUAL spec needs to be tuned to bumb up the output voltage. Once I did this it works like a champ.

I used the PCM1794, AD1896, and the CS8416. The opamps were AD8610's
 
#184
HaLo6 said:
Also anyone that is going to use the premium BOM, my experince has indicated that it needs a solid 15V DC to work. I was having issues using the ezDual putting out 13.86V DC, it was giving me cutouts. So the ezDUAL spec needs to be tuned to bumb up the output voltage. Once I did this it works like a champ.

I used the PCM1794, AD1896, and the CS8416. The opamps were AD8610's
Click to expand...


The resistor settings can be changed to accomodate lower voltages. Basically, one needs to read the data sheets for LM317/37 and whatever your opamp happens to be, and perform the necessary calculations.
 
#191
Let the group buy commence!

ezDAC and ezDual boards are $12 USD each. To make things a little bit easier for myself, shipping will be $6 USD flat for orders under 10 boards. Anything over that will probably require more expensive packaging and slightly higher shipping costs.

I should also note that this time the ezDual boards will have soldermask/silkscreen, so they will look a little nicer.

Instructions

1. Send me e-mail (
An externally hosted image should be here but it was not working when we last tested it.
) with number of boards you want and wait for my PayPal invoice.
2. Send payment.


It's really that simple. I should have the all the boards within 2 weeks, and will start shipping at that time. Feel free to ask questions.
 
#199
ezkcdude said:
Let the group buy commence!

ezDAC and ezDual boards are $12 USD each. To make things a little bit easier for myself, shipping will be $6 USD flat for orders under 10 boards. Anything over that will probably require more expensive packaging and slightly higher shipping costs.

I should also note that this time the ezDual boards will have soldermask/silkscreen, so they will look a little nicer.

Instructions

1. Send me e-mail (
An externally hosted image should be here but it was not working when we last tested it.
) with number of boards you want and wait for my PayPal invoice.
2. Send payment.


It's really that simple. I should have the all the boards within 2 weeks, and will start shipping at that time. Feel free to ask questions.
Click to expand...
 
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