Y amp now done and I am a very happy bunny... Post: 302905443

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The Lounge What is on Your Mind? Y amp now done and I am a very happy bunny... Post 302905443 by Corona688 on Wednesday 11th of June 2014 02:33:03 PM

06-11-2014

Registered User

Very, very lovely job. Lot of work gone into that obviously. Took me a while to figure out what everything did.

I know you're avoidant of IC's but the 7805 5V regulator has been a must-have for nigh on 30 years. In many ways it's going to be a lot easier to get than a 5V zener -- less power-hungry and noisy, too.

A good alternative to an audio transformer is a telephone one. Usually the same impedance, and you find one in nearly every modem that gets thrown away.

Corona688

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regulator_set_optimum_mode

REGULATOR_SET_OPTIMU(9) 					   API reference					   REGULATOR_SET_OPTIMU(9)

NAME

       regulator_set_optimum_mode - set regulator optimum operating mode

SYNOPSIS

       int regulator_set_optimum_mode(struct regulator * regulator, int uA_load);

ARGUMENTS

       regulator
	   regulator source

       uA_load
	   load current

DESCRIPTION

       Notifies the regulator core of a new device load. This is then used by DRMS (if enabled by constraints) to set the most efficient regulator
       operating mode for the new regulator loading.

       Consumer devices notify their supply regulator of the maximum power they will require (can be taken from device datasheet in the power
       consumption tables) when they change operational status and hence power state. Examples of operational state changes that can affect power

CONSUMPTION ARE

       -

       o Device is opened / closed. o Device I/O is about to begin or has just finished. o Device is idling in between work.

       This information is also exported via sysfs to userspace.

       DRMS will sum the total requested load on the regulator and change to the most efficient operating mode if platform constraints allow.

       Returns the new regulator mode or error.

AUTHORS

       Liam Girdwood <lrg@slimlogic.co.uk>
	   Author.

       Mark Brown <broonie@opensource.wolfsonmicro.com>
       Wolfson Microelectronics,

	   Author.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010						   REGULATOR_SET_OPTIMU(9)