I will wait to share gerberslatest pcb version
- power supply with two capacitors
- added output RL network
I will assume that power from 40v will allow you to get 30w / 4ohm. For optimization, you will have to recalculate (reduce) the resistor values.
I would not consider 20V power supply
You can use a DC-DC boost converter.
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Hi LKA. It's been very quiet around here lately. Are there gerber files and schematic available for your latest pcb? Looks like a very interesting and easy build.latest pcb version
- power supply with two capacitors
- added output RL network
I see on the BOM you shared earlier you included some substitutes - Thank you for that 002. I might find some of the subs from our local suppliers.I asked LKA the same question and the answer was:
2SC5171 / 2SA1930 or TTC011B / TTA006B (Observe pinout changes)
Could you share the source for these transistors? I am from Australia too.If I'd known you were missing 2SC4793 / 2SA1837 I could have sent you some over
I can source them locally from a reputable source.
Thanks.
Thank you! Thank you! Thank you! You saved my life!
the 2SC4793 and 2SA1837 have full plastic case TO-220FP
try these from KEC
https://www.aliexpress.com/item/100....order_list.order_list_main.35.5b991802Un6A0Y
try these from KEC
https://www.aliexpress.com/item/100....order_list.order_list_main.35.5b991802Un6A0Y
The ones from Wagner are full plastic case. They just have stock / wrong photos for a lot of their parts.the 2SC4793 and 2SA1837 have full plastic case TO-220FP
I have noticed that the photo on their website is wrong. That's fine. Wagner seems to be reputable supplier. I bought other parts from them before. I just did not think to look for these transistors as well. I tried RS, Element14, Digikey, Mouser, Altronics, Jaycar. I just missed Wagner/WES. Didn't want to buy from eBay as there is a high risk on buying fakes.The ones from Wagner are full plastic case. They just have stock / wrong photos for a lot of their parts.
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