Nobody ever edits, if its not advertising spam or prank posting shows is a legit member and passes in original form. After 5 posts its automatically free unless sometimes a glitch so we mods spot some cases of too many legit posts and still stuck so we must go free them manually. You must have just passed the pipeline phase by now for instance.
Thank you Andrew.
I can not disassemble the shunt but will do some sims and report back...
Hi, I would like to use the sslv1.1 for a current of 600 mA and voltage 5v. I have a 9-volt transformer and 1A.
I have always used the sslv1 that has been for projects up to 100 mA. Can be used safely for 600-700 mA ?, what are the values r101 for these current ?, a large sink is needed ?.
Thank you.
Al
I have always used the sslv1 that has been for projects up to 100 mA. Can be used safely for 600-700 mA ?, what are the values r101 for these current ?, a large sink is needed ?.
Thank you.
Al
a 9Vac, 1Aac transformer when fed into a capacitor input filter will have to be down rated to ~0.55Adc after the rectifier.
Using the full 0.55Adc rating will run the transformer at maximum rated temperature. It will be hot.
I suggest you use a continuous DC current of <50% of the maximum DC rating after applying the capacitor input de-rating (look at the manufacturers capcitor input de-rating).
i.e. a 1Aac transformer should have a continuous DC current of ~¼Adc for good relibaility.
Using the full 0.55Adc rating will run the transformer at maximum rated temperature. It will be hot.
I suggest you use a continuous DC current of <50% of the maximum DC rating after applying the capacitor input de-rating (look at the manufacturers capcitor input de-rating).
i.e. a 1Aac transformer should have a continuous DC current of ~¼Adc for good relibaility.
Yes it can be used for such currents and has been used many times. For values try to roughly predict by using the XL calculator file from post one. With 9V transformer and your settings use a sink around 2C/W. Something like this one SK 92/50 SA FISCHER ELEKTRONIK, Heat Sink, Standard Extruded, Black Anodized, 1.9 °C/W, 40 mm, 100 mm, 50 mm | Farnell element14
Take a look at:
http://www.hammondmfg.com/pdf/5c007.pdf
It all depends on a combination of choke/cap input and half wave/full wave/bridge full wave rectification.
Keep in mind, there is no free lunch. If you have a 9VA transformer, that's all the energy that you can get unless you push the transformer beyond it's rating.
I'm getting ready to build a 300mA +/-26V SSLV1.1 for a BA-3 FE. Have nearly all parts, read the guide, ran the excel calculator, etc.
My ten 2SK117 JFETs measure Idss like this:
a 3.11
b 3.12
c 3.33
d 4.00
e 4.33
f 4.76
g 5.25
h 5.77
i 5.77
j 5.94
Are the >5mA OK for Q105,Q205?
Presumably I would use a/b for Qn01, e/f for Qn03 and h/i for Qn05.
BK
My ten 2SK117 JFETs measure Idss like this:
a 3.11
b 3.12
c 3.33
d 4.00
e 4.33
f 4.76
g 5.25
h 5.77
i 5.77
j 5.94
Are the >5mA OK for Q105,Q205?
Presumably I would use a/b for Qn01, e/f for Qn03 and h/i for Qn05.
BK
