I think H900 ..........
Let it be.... Even sir mile is not answering
So close this thread....
Let it be.... Even sir mile is not answering
So close this thread....
Sneha B. This thread was created decade ago do not expect somebody to reply you immediately. They have business to take care of. Secondly your query already answered years ago so feel free to BACKREAD all the pists you have all the answers. GOODLUCK
@wattaniya,
Some tips:
use yellow color for the top overlay. It's more eyes friendly. 😉
Edit: btw, your top overlay is overlapping the multi-layer / pads. Also, never put designators inside the gabarits of the component.
Use thicker tracks/polygons where the current is higher or use 2 oz FR-4 boards.
Some tips:
use yellow color for the top overlay. It's more eyes friendly. 😉
Edit: btw, your top overlay is overlapping the multi-layer / pads. Also, never put designators inside the gabarits of the component.
Use thicker tracks/polygons where the current is higher or use 2 oz FR-4 boards.
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Thank u Hightech for the tips. i" ll change it.
Attachments
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I am thinking of ocp and dc protection circuit for Apex h900 and its derivatives.
If you have any documents can you share? I draw pcb, I can share it on the page.
If you have any documents can you share? I draw pcb, I can share it on the page.
Hey folks, I've built the stereo protection circuit from Apex, I have a couple of questions.
What do you think could be causing the DC protection to only work when both channel outputs are connected together and DC is applied but if I apply DC at either 1 or 2 channel input the DC protection doesn't work, relay stays on.
I built my board according to the schematic attached to this post. It seems to me that in the DC protection circuit there is a 220k resistor value written for both inputs but it seems to me only one 220k resistor to ground is needed there and I seem to have only one.
Also can the board be configured that the fan doesn't start spinning until some set temperature instead of being always on and at full power after 60 degrees?
What do you think could be causing the DC protection to only work when both channel outputs are connected together and DC is applied but if I apply DC at either 1 or 2 channel input the DC protection doesn't work, relay stays on.
I built my board according to the schematic attached to this post. It seems to me that in the DC protection circuit there is a 220k resistor value written for both inputs but it seems to me only one 220k resistor to ground is needed there and I seem to have only one.
Also can the board be configured that the fan doesn't start spinning until some set temperature instead of being always on and at full power after 60 degrees?
