RMS X 1.414 = PEAK RMS X 2.828 = PEAK TO PEAK PEAK X 0.707 = RMS P-P X 0.3535 = RMS Chuck Perlingiero Chuck's Electronic Repair (610) 623-2224 (610) 259-9618 (Fax) [EMAIL PROTECTED]
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Mark Wentowski Sent: Tuesday, May 04, 2004 11:28 PM To: ELECTRONICS PROFESSIONALS LIST Subject: RE: [Techs] Need advice from engineering folks. No Walter. You are talking DC. I need a quick refresher on AC. .404 X peak =RMS? I just can't remember. Bob Waterman is the expert. Perhaps he will see this and help out. AC theory is tough. It's not like re-wiring your mama's lamp. Mark Wentowski Perry Hill Electronics 3836 Harrison Rd. Montgomery AL 36109 phone: (334)279-5622 fax: (334)273-9050 [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of walter wood Sent: Tuesday, May 04, 2004 9:00 PM To: Techs Subject: [Techs] 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:[EMAIL PROTECTED] __________________________________ Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs http://hotjobs.sweepstakes.yahoo.com/careermakeover _______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com _______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com _______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com
