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1. [Amps] EIMAC Confusion (score: 1): Author: mark@sandlabs.com (mark); Date: Tue, 12 Nov 2002 22:18:48 -0500; In the EIMAC Technical Data for the 8877/3cx1500A7 is is stated in the ABSOLUTE Ratings the Plate Dissipation is 1500W. I take this as an ABSOLUTE MAX. However in the TYPICAL Operation at 88-108MHz U; /archives//html/Amps/2002-11/msg00195.html (8,039 bytes)
2. [Amps] EIMAC Confusion (score: 1): Author: mark@sandlabs.com (mark); Date: Wed, 13 Nov 2002 07:44:51 -0500; Thank you all for the replies :) I am a Solid State kind'a guy. There, things are relatively simple. TOTAL DEVICE DISSIPATION (TDD) is DCV times DCI`. The ratio between TDD and OUTPUT POWER (OP) defi; /archives//html/Amps/2002-11/msg00199.html (9,500 bytes)
3. [Amps] EIMAC Confusion (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Wed, 13 Nov 2002 13:41:03 -0000; OUTPUT OP In this situation, isn't efficiency rf output divided by dc input? Max. device dissipation is just that, a maximum limit of (dc input minus rf output). Where tube specs. refer to anode diss; /archives//html/Amps/2002-11/msg00200.html (7,541 bytes)
4. [Amps] EIMAC Confusion (score: 1): Author: mark@sandlabs.com (mark); Date: Wed, 13 Nov 2002 09:22:30 -0500; You are right Steve ... What throws me of that there are power sources (filament & grid) which are significant some times (200... 400W) and are not tacken in acount ... In SS, the base/gate power is; /archives//html/Amps/2002-11/msg00201.html (8,796 bytes)
5. [Amps] EIMAC Confusion (score: 1): Author: g8gsq@qsl.net (Steve Thompson); Date: Wed, 13 Nov 2002 14:33:58 +0000; Indeed - it might vary between manufacturers and tubes. The first data sheet that came to hand was Eimac 4CX1500A. This presents the info in two forms. In the 'typical operating' bits it gives specif; /archives//html/Amps/2002-11/msg00203.html (7,672 bytes)
6. [Amps] EIMAC Confusion (score: 1): Author: DF3KV@aol.com (DF3KV@aol.com); Date: Wed, 13 Nov 2002 09:34:53 EST; Hi Mark, Total device dissipation is never DCV time DCI, that is total consumption (input). The total dissipation is the consumption minus output power, of course this dissipation includes conductor; /archives//html/Amps/2002-11/msg00204.html (7,586 bytes)

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