That's not a heat sink, that's an electrolytics heater!
How cozy they cuddle in the warm place!
cheers, Gerhard
Dear @gerhard
As you know people not amateur on this forum. Yes you right they are so close to caps. But pcb have so wide gndplane for thermal control. As you know and other people know, i dont use higher voltaj for chip input. I use 4.5vac 6v ac 12vac 15vac for 3.3vdc and 5vdc 12vdc and 15vdc.already chips are 500ma and 1a with parallel… i use 1a version on es9028pro for dvcc and osc power with 4,5vac input 3,3vdc ouput and i dont use heatsink. If a person use 12vac transformer for 3,3vdc… he needs to learn ohm rules… so my heatsink not cap heatter….. if you have good advice for pcb i can revise them as your advice… thank for kind feedback
As you know people not amateur on this forum. Yes you right they are so close to caps. But pcb have so wide gndplane for thermal control. As you know and other people know, i dont use higher voltaj for chip input. I use 4.5vac 6v ac 12vac 15vac for 3.3vdc and 5vdc 12vdc and 15vdc.already chips are 500ma and 1a with parallel… i use 1a version on es9028pro for dvcc and osc power with 4,5vac input 3,3vdc ouput and i dont use heatsink. If a person use 12vac transformer for 3,3vdc… he needs to learn ohm rules… so my heatsink not cap heatter….. if you have good advice for pcb i can revise them as your advice… thank for kind feedback
Sorry, but this picture is soooo suggestive. Airflow through the fins
is completely blocked. It would already be a help to rotate the coolers
by 90 degrees.
I'm a bit sensitive here because JUST NOW I have a Lambda Vega 450
switch mode power supply open on the table that has kept my
R&S ZVB8 VNA unusable for a year. Root cause was a tiny 10u/65V
electrolytic that was hidden in the air shadow of the primary
reservoir capacitors where it dried up over the years.
Absolutely no documentation.
is completely blocked. It would already be a help to rotate the coolers
by 90 degrees.
I'm a bit sensitive here because JUST NOW I have a Lambda Vega 450
switch mode power supply open on the table that has kept my
R&S ZVB8 VNA unusable for a year. Root cause was a tiny 10u/65V
electrolytic that was hidden in the air shadow of the primary
reservoir capacitors where it dried up over the years.
Absolutely no documentation.
The noise performance of the regulators is really good. I have many regulators and I will make comparisons one by one.
I am thinking of using an LT3045/LT3094 combo @ +/- 15v for a phono preamp. I am using some preamp boards I bought on AE, but populated with parts from a circuit of my own, not the ones on the kit. Two stages, one passive + one active on one preamp, the other two stage too but pssive, following one Walt Jung design. The kits have one regulated stage which will serve as pre-regulators.
This is the second stage final regulators, as sold by AliExpress.
https://www.aliexpress.com/item/400...N508Fljf&utparam-url=scene:search|query_from:
Has anyone tried them?
Each channel will have its separate regulators. Only the transformer will be common.
What do you think of my proposal?
This is the second stage final regulators, as sold by AliExpress.
https://www.aliexpress.com/item/400...N508Fljf&utparam-url=scene:search|query_from:
Has anyone tried them?
Each channel will have its separate regulators. Only the transformer will be common.
What do you think of my proposal?
