+- Solfegio Forum (https://solfegio.com)
+-- Forum: Sound System (https://solfegio.com/forumdisplay.php?fid=4)
+--- Forum: Power Amplifier (https://solfegio.com/forumdisplay.php?fid=21)
+--- Thread: Workhorse 1500W Bipolar Class H (/showthread.php?tid=8037)
- jacksound - 27-10-2011
kok gak bisa upload gambar ya
- mukidit - 30-10-2011
kalau saya pilih kelas berat saja pasti seru kayak mike tyson
- airend_prof - 01-11-2011
Wah nanti pake gigit kuping mas
- goank - 01-11-2011
cukup sbg penyimak saja ,,maklum msh SD
- joko_mul - 01-11-2011
dari http://sound.westhost.com/articles/class-g.htm
A similar (at least in some respects) arrangement is called Class-H, and it can be difficult to decide exactly into which camp some amplifiers fall. Class-H is often described as using a "bootstrap" capacitor that lifts the rails as needed, but cannot maintain them at the full voltage for more than a few cycles. After a short period, the capacitor discharges, and the high voltage supply collapses. Originally, there were used for car audio, and allowed much more power than can normally be expected (about 18W for a BTL (bridge-tied-load) amp operating from 13.8V DC). Being far cheaper than a switchmode power supply, this is a convenient way to get extra power for very little expense. A number of specialised ICs were/are produced for just this purpose.
Because the difference is rather blurred, you may see Class-G amps described as Class-H and vice versa. My preferred terminology is that only amps that use a bootstrap circuit are "real" Class-H. Likewise, if the supply is switched or boosted using a separate fixed high voltage supply, then Class-G is the most appropriate description of their topology.
Hitachi is usually credited with the first Class-G amplifier, but from the descriptions I've seen, it actually appears to have been Class-H. The peak power of 400W into 8 ohms was not available continuously, but only for relatively brief periods. This implies that the high voltage rail was produced by bootstrapping a capacitor, rather than a switched rail design. By my definition above, that makes it Class-H, although Hitachi described it at the time (1978) as Class-G.
- SONY REGENG - 16-11-2011
Walalaah.. ra faham blass..
Ndak usah diterjemahkan. Kesimpulannya aja, gimana Kang?
SD aja ndak lulus..
- MasPaijo - 16-11-2011
Kalau Class H banyak ke untungan knapa Ampli pabrikan banyak main di class A/B..?
dan class D untuk amplifier mobil..?
Silakan di geber yang punya ampli class H biar tahu sampai di mana itu ampli..
Juga yang class A/B terus bandingangkan yang mana bikin kantong kedodoran....ha..ha...apalagi yang makai Genset....
Hajar terus kang Nana......saya dukung, kita orang treima matengnya saja....kek..kek...
Salam PCB....
- SONY REGENG - 04-12-2011
MasPaijo timestamp='1321456496' post='121886 Wrote:...kita orang treima matengnya saja....kek..kek...
Waduh... enak kali terima mateng. Nggak kreatif. Kalo gitu idem aja daaahh... Xixixixixi...
SD aja ndak lulus, gak nguasai ilmunya, mau kreatif bisa jadi malah mainan jin. Abisnya ngebul..
RE: Workhorse 1500W Bipolar Class H - tajinder - 03-06-2012
good power amplifier but pcb is two layer.
Balasan: Workhorse 1500W Bipolar Class H - Andycha - 25-02-2017
belum ada lanjutan klas H dan klas G nih baru aku nyimak2 aja xixixi