diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Power Supplies (http://www.diyaudio.com/forums/power-supplies/)
-   -   alteration of the power supply from the power amplifier Harman Kardon HK870 at 220. (http://www.diyaudio.com/forums/power-supplies/225452-alteration-power-supply-power-amplifier-harman-kardon-hk870-220-a.html)

alexkmp3 11th December 2012 12:30 PM

alteration of the power supply from the power amplifier Harman Kardon HK870 at 220.
 
Greetings! Please inform parameters transaformatora T1. I want to remake it under the power of 220 volts. Power switch is not found. Version of the adapter does not fit, because in addition to the American amp powered devices are a few pieces in the front - and a number of adapters tired. Service manual for my model here Скачать manual Harman Kardon hk870 Service Manual. Most likely, the trans will wind itself, and for this you need to know the options. Like, if I understand correctly, this should limit winding trance T1 and replacing the capacitor C1.

Triodethom 11th December 2012 01:01 PM

Quote:

Originally Posted by alexkmp3 (Post 3280248)
Greetings! Please inform parameters transaformatora T1. I want to remake it under the power of 220 volts. Power switch is not found. Version of the adapter does not fit, because in addition to the American amp powered devices are a few pieces in the front - and a number of adapters tired. Service manual for my model here Скачать manual Harman Kardon hk870 Service Manual. Most likely, the trans will wind itself, and for this you need to know the options. Like, if I understand correctly, this should limit winding trance T1 and replacing the capacitor C1.

From the manual it is a 120 volt primary only . So an outside transformer from 220 primary to 120 secondary of 5 amps on primary is the easy way to use this amp. This also called a step down transformer no need to change the hk870 as it is just supply it with 120volt ac . Hope this helps.

alexkmp3 11th December 2012 01:19 PM

Thank you! This is also a good option. However, I want to know the parameters of the native transformer.

Triodethom 11th December 2012 03:04 PM

Quote:

Originally Posted by alexkmp3 (Post 3280304)
Thank you! This is also a good option. However, I want to know the parameters of the native transformer.

Very well which ones ?

alexkmp3 11th December 2012 04:39 PM

Interested in power and voltage at the terminals of the windings (blk, brn, org, blu).


All times are GMT. The time now is 05:51 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2