DHT Heater using VCCS - PCB or Kit (Possible Group buy)
- Mike H
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#1066 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Suddenly I'm wondering how long two car batteries will last ...
(that is to say one battery per 833A)
(that is to say one battery per 833A)
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
- pre65
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#1067 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Not a feasible option due to size, and cost.
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
- Mike H
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#1068 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Quite likely. Could look super cool tho.
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
#1069 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
At least the car batteries would not hum!
Whenever I feel blue, I start breathing again.
#1070 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Andrew can I take another 6 of the small boards please?
If you have components spare (especially the smd caps) let me know, but happy to just take 6 of the boards if you have them.
If you have components spare (especially the smd caps) let me know, but happy to just take 6 of the boards if you have them.
- izzy wizzy
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#1071 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Hi Andrew.
Is there a possibility of the larger board being available in future? What is the primary difference between the large and small board? I would like 4 of the larger one if possible at some point.
Cheers,
Stephen
Is there a possibility of the larger board being available in future? What is the primary difference between the large and small board? I would like 4 of the larger one if possible at some point.
Cheers,
Stephen
#1072 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Sure, I'll drop you a pm, Mick
Analogue, the lost world that lies between 0 and 1.
#1073 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
If there's a bit of demand, I'll get some done. Anymore for any more?izzy wizzy wrote: ↑Sun Jun 30, 2019 12:04 pm Hi Andrew.
Is there a possibility of the larger board being available in future? What is the primary difference between the lathe and small board? I would like 4 of the larger one if possible at some point.
Cheers,
Stephen
Analogue, the lost world that lies between 0 and 1.
#1074 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
In case I haven't said Andrew, I think these boards are superb. Excellent job, thanks.
Between Geoff and I we have 24 of these in use and more to come.
Between Geoff and I we have 24 of these in use and more to come.
#1075 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Thanks
Analogue, the lost world that lies between 0 and 1.
- izzy wizzy
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#1076 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
The part C2220C474J5GACTU I'm finding very hard to get. Farnell not expecting delivery March 2020. RS same. Ebay suppliers don't actually have it. Any ideas? I'm after 16.
Cheers,
Stephen
Cheers,
Stephen
#1077 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
HMm, the world seems to have run out of large value C0G capacitors. I wonder how a film would do. I know in testing, that cap mattered, but I don't remember if film was tried.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
- izzy wizzy
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#1078 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
I think I'm about to find out but have no reference. Polyester or polypropylene; metalised. What type does the panel think would be the option here ?
Cheers,
Stephen
#1079 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
- IslandPink
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#1080 Re: DHT Heater using VCCS - PCB or Kit (Possible Group buy)
We tried a few, and they all seemed to have too much inductance. I seem to remember the first cap that sounded properly open across the full frequency band was the Z7R ( is it ) ceramic layer cap. It had some 'grit' in the upper mids and treble, but it cured the basic problems we were having with all the small box poly-props.
"Once you find out ... the Circumstances ; then you can go out"