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App\Entity\Entry {#1585
+user: App\Entity\User {#261 …}
+magazine: Proxies\__CG__\App\Entity\Magazine {#1721 …}
+image: null
+domain: Proxies\__CG__\App\Entity\Domain {#1687 …}
+slug: "How-to-Dimension-a-Power-Supply-for-an-Audio-Amplifier"
+title: "How to Dimension a Power Supply for an Audio Amplifier ?"
+url: null
+body: """
Hi,\n
\n
I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).\n
\n
The amp is based on the TDA7294 chip and is rated 85W nominal. Now I’m looking for a power supply, but I’m a bit lost (this isn’t really my strongest field, to put it mildly).\n
\n
Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?\n
\n
Also, the seller said that you need to use CV power supplies, CC won’t work and kill the circuit. Does that mean a switching supply can’t be used?\n
\n
It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?\n
\n
Best, N
"""
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date: 2023-10-26 01:22:38.0 +02:00
}
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+comments: Doctrine\ORM\PersistentCollection {#1680 …}
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+apId: "https://discuss.tchncs.de/post/5265073"
+editedAt: null
+createdAt: DateTimeImmutable @1698215466 {#1647
date: 2023-10-25 08:31:06.0 +02:00
}
} |
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App\Entity\Entry {#1585
+user: App\Entity\User {#261 …}
+magazine: Proxies\__CG__\App\Entity\Magazine {#1721 …}
+image: null
+domain: Proxies\__CG__\App\Entity\Domain {#1687 …}
+slug: "How-to-Dimension-a-Power-Supply-for-an-Audio-Amplifier"
+title: "How to Dimension a Power Supply for an Audio Amplifier ?"
+url: null
+body: """
Hi,\n
\n
I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).\n
\n
The amp is based on the TDA7294 chip and is rated 85W nominal. Now I’m looking for a power supply, but I’m a bit lost (this isn’t really my strongest field, to put it mildly).\n
\n
Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?\n
\n
Also, the seller said that you need to use CV power supplies, CC won’t work and kill the circuit. Does that mean a switching supply can’t be used?\n
\n
It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?\n
\n
Best, N
"""
+type: "article"
+lang: "en"
+isOc: false
+hasEmbed: false
+commentCount: 7
+favouriteCount: 3
+score: 0
+isAdult: false
+sticky: false
+lastActive: DateTime @1698276158 {#1424
date: 2023-10-26 01:22:38.0 +02:00
}
+ip: null
+adaAmount: 0
+tags: null
+mentions: null
+comments: Doctrine\ORM\PersistentCollection {#1680 …}
+votes: Doctrine\ORM\PersistentCollection {#1686 …}
+reports: Doctrine\ORM\PersistentCollection {#1795 …}
+favourites: Doctrine\ORM\PersistentCollection {#1718 …}
+notifications: Doctrine\ORM\PersistentCollection {#1724 …}
+badges: Doctrine\ORM\PersistentCollection {#2447 …}
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-id: 7620
-titleTs: "'amplifi':10 'audio':9 'dimens':3 'power':5 'suppli':6"
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+cross: false
+upVotes: 0
+downVotes: 0
+ranking: 1698255466
+visibility: "visible "
+apId: "https://discuss.tchncs.de/post/5265073"
+editedAt: null
+createdAt: DateTimeImmutable @1698215466 {#1647
date: 2023-10-25 08:31:06.0 +02:00
}
} |
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Show voter details
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moderate
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App\Entity\Entry {#1585
+user: App\Entity\User {#261 …}
+magazine: Proxies\__CG__\App\Entity\Magazine {#1721 …}
+image: null
+domain: Proxies\__CG__\App\Entity\Domain {#1687 …}
+slug: "How-to-Dimension-a-Power-Supply-for-an-Audio-Amplifier"
+title: "How to Dimension a Power Supply for an Audio Amplifier ?"
+url: null
+body: """
Hi,\n
\n
I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).\n
\n
The amp is based on the TDA7294 chip and is rated 85W nominal. Now I’m looking for a power supply, but I’m a bit lost (this isn’t really my strongest field, to put it mildly).\n
\n
Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?\n
\n
Also, the seller said that you need to use CV power supplies, CC won’t work and kill the circuit. Does that mean a switching supply can’t be used?\n
\n
It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?\n
\n
Best, N
"""
+type: "article"
+lang: "en"
+isOc: false
+hasEmbed: false
+commentCount: 7
+favouriteCount: 3
+score: 0
+isAdult: false
+sticky: false
+lastActive: DateTime @1698276158 {#1424
date: 2023-10-26 01:22:38.0 +02:00
}
+ip: null
+adaAmount: 0
+tags: null
+mentions: null
+comments: Doctrine\ORM\PersistentCollection {#1680 …}
+votes: Doctrine\ORM\PersistentCollection {#1686 …}
+reports: Doctrine\ORM\PersistentCollection {#1795 …}
+favourites: Doctrine\ORM\PersistentCollection {#1718 …}
+notifications: Doctrine\ORM\PersistentCollection {#1724 …}
+badges: Doctrine\ORM\PersistentCollection {#2447 …}
+children: []
-id: 7620
-titleTs: "'amplifi':10 'audio':9 'dimens':3 'power':5 'suppli':6"
-bodyTs: "'300va':86 '300w':84 '680w':72 '8':14,70 '85w':33,71 'add':65 'also':87 'amp':23 'amplifi':10,16 'away':77 'base':25 'best':138 'bit':47 'bought':4 'cap':127 'cc':99 'channel':15 'chip':29 'circuit':106 'could':74,131 'cv':96 'field':55 'get':76 'hi':1 'instal':21 'integr':128 'isn':50 'kill':104 'like':82,119 'look':38,118 'lost':48 'm':37,45 'made':9 'mean':109 'mild':59 'modul':11,121 'n':139 'need':63,93 'nomin':34 'output':68 'potenti':132 'power':41,69,97 'pre':8 'pre-mad':7 'project':17 'put':57 'rate':32 'realli':52 'recent':3 'rectifi':124 'right':137 'said':90 'seller':89 'smaller':81 'smooth':126 'someth':80 'sound':20 'strongest':54 'suppli':42,98,112 'switch':111 'tda7294':28 'transform':136 'use':79,95,116,134 'won':100 'work':102"
+cross: false
+upVotes: 0
+downVotes: 0
+ranking: 1698255466
+visibility: "visible "
+apId: "https://discuss.tchncs.de/post/5265073"
+editedAt: null
+createdAt: DateTimeImmutable @1698215466 {#1647
date: 2023-10-25 08:31:06.0 +02:00
}
} |
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Show voter details
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