Search found 44 matches: f3 ptc

Searched query: f3 ptc

ignored: f3

by w-u-2-o
Mon Jul 16, 2018 10:44 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

As far as I know, only one person has modified their Angelia and they used a small bit of wire. When I get the part I just ordered (see above) I am going to try that.
by F1HDI
Mon Jul 16, 2018 7:03 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi Scott, A quick 'back' on my anan100D#1 from V2 to V1 this morning show No sign of osc instability either on warm-up nor (after 1 hour) on regular basis. I am not very familiar with the features of this forum but can send measurement pictures to you. I'll do the same measurement on my 100D#2 later...
by w-u-2-o
Sun Jul 15, 2018 1:18 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Couldn't say for sure, Jean-Marc. I don't know what a "clock restart" is. The only PTC that's been identified that might work is the 1210L450SLWR identified above. As far as I know, nobody has tried it yet. However, thanks for reminding me, I'm going to order ...
by F1HDI
Sun Jul 15, 2018 8:28 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi, On two anan100D (angelia) running protocol V2 and thus Thetis, I am seeing the following issue and wonder if this could be related to the 'fuse' issue described here : - tests conditions are two anan100D, one from the early batches (rev16, low perf 10MHz tcxo) and an upgraded one (rev24, CWT817 ...
by w-u-2-o
Wed Mar 28, 2018 2:06 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Nope, the Orion and the Orion MkII are supposedly good to go. I hope! ;)

73!

Scott
by Joe-W4WT
Wed Mar 28, 2018 1:45 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

You know, sometimes I wonder if getting older is better than the alternative... sorry for that. I was focusing on the "non-availability" of the current part rather than the obvious problem that you needed more hold current. I'll keep looking around. Does this affect the Orion MKII boards a...
by w-u-2-o
Wed Mar 28, 2018 1:08 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi Joe,

That's the same part I identified up above, and since it's a direct replacement it's unfortunately not applicable to the problem, which is calling for a part with a much higher trip current.

Thanks & 73,

Scott
by Joe-W4WT
Wed Mar 28, 2018 12:55 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

This should work...

Mouser # 530-0ZCG0300FF2B
Mfr. # 0ZCG0300FF2B

Currently showing 6000+ can ship immediately.

Same part number as original except the 4th letter being a G rather than a C. Unless I've missed something, I see very little difference in the two items.

73,

Joe W4WT
by w-u-2-o
Tue Mar 27, 2018 8:19 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

I got a suggestion from the old Yahoo group to go one size smaller, to a 1210 size part. Littlefuse makes a 4.5A PTC, part no. 1210L450SL. If I can get someone to give me a good current measurement I may go with that. It's less than 1mm shy of the pad on each side, easily bridgeable with solder.
by W1AEX
Tue Mar 27, 2018 7:46 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

That's unfortunate Scott, but you would certainly not be the only one who did that. When I was researching this potential problem with my Hermes - ANAN-100 several users of the ANAN and the original TAPR versions of Hermes said that they went with the wire jumper and never gave it another thought. I...
by w-u-2-o
Tue Mar 27, 2018 5:15 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 8135

Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

... 2 firmware are in excess of that reliably delivered through the 3.3V PTC ("fuse"), F3. According to the Angelia bill-of-materials (BOM) published on the Apache web site, F3 is ...
by w-u-2-o
Sun Feb 11, 2018 12:36 pm
Forum: Thetis
Topic: Thetis ETA for release ?
Replies: 30
Views: 12799

Re: Thetis ETA for release ?

... to replace or bypass one of the on-board circuit protection devices (a PTC type self resetting fuse) on the 3.3V supply rail. On Angelia that would be F3. It seems that an FPGA pulls a bit more current running P2 firmware and causes the PTC ...
by erict35
Wed Dec 13, 2017 2:11 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Anan 8000 DLE Fans
Replies: 1
Views: 1340

Anan 8000 DLE Fans

... sends a proportional voltage to the ATmega board (ADC2 input), depending on the temperature sensor (as far as I can judge R38,probably a NTC or PTC resistor). The fan is the driven by a PWM stobe sent by the PD5 ouput of the ATmega, buffered by a N-Mosfet. Which one is in use in the rig ? (or ...
by w-u-2-o
Sat Nov 04, 2017 7:46 pm
Forum: PC's & Homebrew Hardware
Topic: Hermes Fail to Start
Replies: 12
Views: 6076

Re: Hermes Fail to Start

... to guess. However, if you think it is thermally related, there are 3 PTC type resettable fuses on the board, F1, F2, and F3. You could check those. If you thermally damaged a chip then it could be hard to find. Good ...

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