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Old 15th August 2002, 09:37 PM   #1
A'af is offline A'af  Indonesia
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Default Virtual battery operation

Hey, is there anybody here know about Virtual battery operation....invented by Technics
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Old 15th August 2002, 11:30 PM   #2
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Hi A'af

Nothing virtual about it, it's just a battery and a charger built into the preamp, so the pre runs on battery most of the time and charges up when it gets flat or when it's not in use.
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Old 15th August 2002, 11:37 PM   #3
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I mean exactly not mention that, here "Virtual Battery Operation" really don't use any battery at all
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Old 15th August 2002, 11:42 PM   #4
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What kit exactly is this used in?
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Old 16th August 2002, 01:45 AM   #5
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Use several farad capacitors then connect them to the op-amp. The op-amp should last for a few months to years with out charging the capacitors again.

Yes, you can use a capacitor instead of using batteries in a pager or beeper. It should last for a few weeks on vibration mode.

Look up BEAM robots and Super Capacitors.
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Old 16th August 2002, 02:09 AM   #6
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Hello!

The "Virtual Battery Operation" solution used Andrea Ciuffoli and he "stoled" from the Technics (but he confess). Here is her amplifier the Power Follower 99:
www.audiodesignguide.com/my/Follower_99c.gif
I think the circuit is a through regulator with Mosfet.
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Old 16th August 2002, 04:25 AM   #7
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But How in Theory and application is used for, perhaps can help with the article, for attn Thanks
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