12V -> 4.5V

Hi Valentin!

At ×ÏÓËp., 05 ÏËÔ. 2003, 10:48 Valentin Davydov wrote to Aleksei Pogorily:

>VD> íÁËÓÉÍÁÌØÎÏ ÄÏÐÕÓÔÉÍÙÊ ÔÏË Õ ÎÅÇÏ ÁÍÐÅÒÁ ÐÏÌÔÏÒÁ. ðÒÉ ËÏÜÆÆÉÃÉÅÎÔÅ >>VD> ÔÒÁÎÓÆÏÍÁÃÉÉ 1:2 ÔÏË ËÌÀÞÁ ÂÕÄÅÔ 300 Íá, ÔÏ ÅÓÔØ ÉÍÅÅÍ ÐÑÔÉËÒÁÔÎÙÊ >>VD> ÚÁÐÁÓ ÐÏ ÔÏËÕ (É ÐÏÌÕÔÏÒÁËÒÁÔÎÙÊ - ÐÏ ÎÁÐÒÑÖÅÎÉÀ). >> >> 5÷ 0,6á - ÜÔÏ 3 ×ÁÔÔÁ. ðpÉ 11 ×ÏÌØÔÁÈ - 270 ÍÁ. õ ÏÂÙÞÎÏÇÏ ÆÌÁÊÂÜËÁ ÐÉËÏ×ÙÊ >> ÔÏË × 4 pÁÚÁ ÂÏÌØÛÅ ÓpÅÄÎÅÇÏ

VD> õ ÏÂÙÞÎÏÇÏ - ÜÔÏ ËÒÉÔÉÞÅÓËÏÇÏ. á ÎÁ MC34064 ËÒÉÔÉÞÅÓËÉÊ ÓÄÅÌÁÔØ ÎÅÐÒÏÓÔÏ.

MC34063 - ÜÔÏ pÅÌÅÊÎÁÑ ïó ÎÁ ×ÙËÌÀÞÅÎÉÅ ÐÌÀÓ ÐpÉÎÕÄÉÔÅÌØÎÏÅ ×ÙËÌÀÞÅÎÉÅ Ó ÐÏÓÔÏÑÎÎÏÊ ÞÁÓÔÏÔÏÊ. ôÁË ÞÔÏ ÞÁÓÔÏÔÁ ÐÏÓÔÏÑÎÎÁÑ, Á pÅÖÉÍ (pÁÚpÙ×ÎÙÊ, ËpÉÔÉÞÅÓËÉÊ, ÂÅÚpÁÚpÙ×ÎÙÊ) ÏÐpÅÄÅÌÑÅÔÓÑ ÉÎÄÕËÔÉ×ÎÏÓÔØÀ, ËÏÜÆÆ.ÔpÁÎÓÆÏpÍÁÃÉÉ É ÔÏËÏÍ ÎÁÇpÕÚËÉ. óÔpÏÇÏ ËpÉÔÉÞÅÓËÉÊ pÅÖÉÍ ÓÄÅÌÁÔØ ÎÅÐpÏÓÔÏ, ÎÏ × UC3843 Ó ÜÔÉÍ pÏ×ÎÏ ÔÁ ÖÅ ÓÉÔÕÁÃÉÑ.

VD> á Ó ÎÅÐÒÅÒÙ×ÎÙÍ ÔÏËÏÍ ÐÉËÏ×ÙÊ ÔÏË ÒÁÚÁ × Ä×Á ×ÙÛÅ ÓÒÅÄÎÅÇÏ.

úÁ×ÉÓÉÔ ÏÔ Reflected Voltage É ÉÎÄÕËÔÉ×ÎÏÓÔÉ (ËÏÔÏpÁÑ × ËÏÎÅÞÎÏÍ ÓÞÅÔÅ ÚÁ×ÑÚÁÎÁ ÎÁ pÁÚÍÅp ÔpÁÎÓÆÏpÍÁÔÏpÁ). ÷ Ä×Á pÁÚÁ - ÜÔÏ Reflected Voltage ÂÏÌØÛÅ ÐÉÔÁÎÉÑ É ×ÅÓØÍÁ ÂÏÌØÛÁÑ ÉÎÄÕËÔÉ×ÎÏÓÔØ. íÏÖÎÏ É ÔÁË, ÎÁ×ÅpÎÏÅ, ÎÏ pÁÓÞÅÔ ÄÏÓÔÁÔÏÞÎÏ ÁËËÕpÁÔÎÙÊ ÔpÅÂÕÅÔÓÑ.
> ïÐÙÔ ÐÏÄÔ×ÅpÄÉÌ ÍÏÉ ÓÌÏ×Á. óÏ ÓÌÕÞÁÊÎÙÍ ÔpÁÎÓÆÏpÍÁÔÏpÏÍ ÈpÅÎ ÎÏpÍÁÌØÎÏ >> ÚÁpÁÂÏÔÁÌÏ.

VD> á ×ÏÏÂÝÅ ÂÅÚ ÔÒÁÎÓÆÏÒÍÁÔÏÒÁ? ;-)

á ×ÏÏÂÝÅ ÂÅÚ ÔpÁÎÓÆÏpÍÁÔÏpÁ ÂÙÌ ÐÏÎÉÖÁÀÝÉÊ. ôÁÍ ÉÎÄÕËÔÉ×ÎÏÓÔØ ÍÁÌÏËpÉÔÉÞÎÁ.

Cheers, Aleksei [mailto: snipped-for-privacy@nm.ru]

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