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Where have you actually come across a 555 timer in the wild?

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NiHaoMike:

--- Quote from: Anks on April 13, 2014, 05:16:08 pm ---
--- Quote from: David_AVD on March 31, 2014, 11:42:13 pm ---I saw two just the other day in a Crown high power audio amplifier.  At a guess I'd say the amp design is from about 10-15 years ago.

--- End quote ---

Crown amplifiers that use the VZ supply (variable impedance) Macrotech 5000VZ and 3600VZ are the most popular. Its very clever in that its quickly switches voltage dependent on the needed output so the transistors don't have to dissipate the extra unneeded energy as heat.

--- End quote ---
Some modern digital amplifiers also vary the supply voltage depending on the volume setting. Apart from the efficiency improvement, it makes it easier to get good resolution at low volume settings. Some others have multiple fixed voltage rails and are basically multi level inverters.

kolbep:
Took a lot of searching, but I just found one in the wild....








madires:

--- Quote from: kolbep on April 14, 2014, 01:12:29 pm ---Took a lot of searching, but I just found one in the wild....

--- End quote ---

I hope that wild electronics bug didn't bit you.  ;)

kolbep:
Now just to track down a resistor colony, and I should be well on my way....

SeanB:
Time to mow your lawn, all the rain is getting it growing nicely.

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