[TechAssist] Re: Need advice from engineering folks.
- From: "Damon" <damon101@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 5 May 2004 07:49:12 -0500
In other words he's saying: Take your total wattage or fuse rating and
DOUBLE IT....I think I said that too ;-)
Damon Brunger
----- Original Message -----
From: "George" <grndmstrg@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, May 05, 2004 2:05 AM
Subject: [TechAssist] Re: Need advice from engineering folks.
| Walter ,
| You didn't state if the amplifier is of solid state or vacuum tube design.
| The way I learned it the fuse requirement is increased by 10% for the slow
| blow type and by 50% for the fast blow variety back when the tube was king
.
| Was the fuse type and value indicated on the label? They may have
| conservatively rated the unit and did not want nuisance blowing of the
fuse.
| Solid state needs fast blow types for better attempt at protecting the
unit.
| Either way if it has a bad short it should blow the fuse. Anyway ask for a
| lot more than you think will be needed, you can never have enough power.
|
| George
| Afana Electronics
| Moreno Valley, CA
| ----- Original Message -----
| From: "walter wood" <wwood_38478@xxxxxxxxx>
| To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
| Sent: Tuesday, May 04, 2004 7:54 PM
| Subject: [TechAssist] Need advice from engineering folks.
|
|
| > Watts divided volts equal amps.
| > 100 watts divided by 100 volts = 1 amp.
| > That's the way a broadcast engineer told me to
| > remember Ohms Law 40 years ago.
| > Now the reason for the question;
| > I have provided the main outdoor sound system,
| > gratis, for the last 3 years, for the Relay for
| > Life charity.
| > The local college provides the lights, and the
| > electric company puts a tempoary service at the
| > location.
| > We've never had enough electricity.
| > Thet are offering to put a permanent service there,
| > and want to know how much IS enough.
| > I measured the current through a 100 watt light
| > bulb, on normal line voltage and read 0.82 amps.
| > That's about right as the voltage was up from the
| > example, therefore the amperage goes down.
| > I measured a 60 watt bulb and got 0.5, exactly what
| > it should be.
| > I then measured a Peavey Session 400 amp, and it
| > read 0.44 amps at idle, but it didn't take much
| > volume to raise the draw to 1 amp.
| > The back plate on this amp states 600 watts and 120
| > volts.
| > It is fused at 6 amps.
| > Following the formula, it should pull 5 amps "maxed
| > out".
| > I know that's a lot of e-mail, but the question can
| > be answered yes or know.
| > "Will I be safe in requiring the amperage of all
| > the amps and effects, etc. to equal the total of
| > their fused ratings."
| > I would think that would be more than adaquite, but
| > I'm asking for the expert advice.
| > I intend to ask for much more because we see the
| > need getting larger in the future, and anyway, it's
| > impossible to know what kind of equipment everyone
| > will show up with.
| > The college already knows the requirments for the
| > lights.
| > TIA
| > Water
| >
| >
| >
| > =====
| > Walter Wood
| > Future Tech Home Center
| > 2786 Hwy. 43 N.
| > Lawrenceburg Tn. 38464
| > 931-829-3337
| > Fax 931-829-4044
| > mailto:wwood_38478@xxxxxxxxx
| >
| >
| >
| >
| > __________________________________
| > Do you Yahoo!?
| > Win a $20,000 Career Makeover at Yahoo! HotJobs
| > http://hotjobs.sweepstakes.yahoo.com/careermakeover
| >
|
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