Everything posted by sorenb
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Blue Hawaii Special Edition
Do you put the cover back in place right after use or do you wait, and for how long?
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Group Buy - Digital Attenuator (Kevin Gilmore)
Fine. I'll order the ERJ-P08F51R0V today. Thus the Shipping will be postpone further, probably until friday this week. It will add 2USD to the kit that will include both the 0805 and the 1206 resistor. Sorry for the inconvenience.
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Transformer phase / no phase marking
Had a few transformers from ToroIDY with two 115V primarys I needed to serialize, unfortunately no markings of the phase. Hook'ed up one of the secondaries to a function generator, and serialized the two primaries. Having two free leads and two connected leads (CT) Measured the voltage V1 from CT to one lead, and V2 from CT to second lead. Finally measured the voltage V3 from lead to lead. If V1 + V2 = V3, then the two windings are in phase. If V1+V2 ≠ V3, the the two windings are out of phase. Are there an easier way of determine the phase of transformer windings?
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Group Buy - Digital Attenuator (Kevin Gilmore)
from what I read in the datasheet for G6KU-2F-Y-DC4.5, the rated coil current is 23.2mA. 23.2mA though 50ohm would be some 25mW. Where does the .4W stem from?
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The Headcase Stax thread
or rather would be a Golden Reference ... You do number two on those amps as well??
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Group Buy - Digital Attenuator (Kevin Gilmore)
To add to the fun, everything is now sorted (The MAX4820 has been put in bags using an anti-static mat + grounded arm wrist). Looks like this: The Dig.Att. kit will come in a small plastic bag, the MAX4820 in in a antistatic bag, and almost all itmes has been labled A-S, like this (Label C i missing as it is backordered): The partslist and configuration will be downloadable from here in pdf format, and looks like: The following has no label as they are easy recognizable: Label A: MAX4820 Lable B: Capacitors Lable E: 32 x 49.9ohms
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Group Buy - Digital Attenuator (Kevin Gilmore)
PROBLEM! The Mouser order for the Dig.Att. kit ended up having one resistor value backordered: the 6ohms. I am pretty sure that I checked everything before ordering, and wasn't asked if I wanted partial delivery. I guess Mouser discovered they were out of stock doing my order, which might explain that it took a few days more before they shipped. This is backordered until late june 6.04ohm I'll change the order tomorrow to another 6.04ohm that seems to be in stock (hopefully) If Mouser delivers on time, I'll be able to ship on Wednesday comming week. Sorry for the delay. I've look at Farnell, Digi-Key and RS-Components and it seems to be hard to find such low value for some reason.
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Leaving the amp on 24/7 Is it ok?
our local Dexter, Steve?
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Leaving the amp on 24/7 Is it ok?
you might improve your partners life span providing release from time to time ...
- KGSSHV Carbon Build Thread
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KGSSHV Carbon Build Thread
just had a look at some of the fats I have at hand. you can easily cut away the holes and have 88mm or so. I used a tracksaw with an aluminium blade, fixed the pcb between two pieces of MDF - not much to it, and some emery cloth to get a nive finish ... I guess you can obtain much the same using a hack saw.
- Group Buy - Überamp + Carbon
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The Headcase Stax thread
... smack the phony, then there are no turning back ... sorry to hear about your hand, building pressure too fast might give a burning sensation
- Group Buy - Überamp + Carbon
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Group Buy - Überamp + Carbon
Most US participant has either received or will receive their parts from Group Buy. The sheet has been updated with final shipping costs 6-13USD ea. !!!!!!!!!!!!!!!!!! one participant got an Über board too many, please let me know ASAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The remainder goes out thursday this week (if Mouser delivers on time). For those not waiting for Dig.Att.Kits those will ship tomorrow/tuesday.
- Group Buy - Überamp + Carbon
- Group Buy - Überamp + Carbon
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Group Buy - Digital Attenuator (Kevin Gilmore)
The distribution happens from two locations, US and Denmark, Europe. Some has been shipped are for people in US ordering LSK389 and/or Dig.Att. boards and no ( Dig.Kit and/or über Group Buy boards). The Über Group Buy boards has arrived in US, and will probably go out during the weekend. The non-US part is on its way to Denmark. Über Group Buy will start ship next week. Dig.Kit for US will also ship next week. /S
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stax mafia circuit boards see updated links on page 5
dns change? how will this effect visitors?
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Logged out of HC front page?
I sometimes experiences to be logged out when changing to the homepage of Head-Case, if I then change into a sub section I appeare logged on again
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Project Scheduling Software
Google doc spreadsheets ... you might need add a little logic in order to add some dependencies between tasks and might a pivot to get the status on your progress ....cost nothing and available on every platform
- Group Buy - Überamp + Carbon
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Group Buy - Digital Attenuator (Kevin Gilmore)
The 10k Dig.Att.kit based on the amb.org: The kit contains, all resistors (Panasonic ERA's), capacitors and the MAX4820EUP's. Please transfer your payment to xxx, put your head-case ID into the notes field + "Dig.Att.Kit". As soon as everybody has made their transfer I'll go ahead and order.
- Vacuums
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Guitar-Case
Crazy like Paul Reed sounds like Saul Goodmann from Breaking Bad ... anyways very impressive how loud they are without amplification