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Relay-Based ON/OFF Flip-Flop Remembers State During Power Failure

Posted: Tue Apr 17, 2018 3:01 pm
by mediatechnology
Relay-Based ON/OFF Flip-Flop Remembers State During Power Failure

http://www.electronicdesign.com/analog/ ... er-failure

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Re: Circuit Collection of Design Ideas from Electronics and EDN

Posted: Tue Apr 17, 2018 5:02 pm
by JR.
or there's flash memory... :lol:

JR

Re: Circuit Collection of Design Ideas from Electronics and EDN

Posted: Tue Apr 17, 2018 8:41 pm
by mediatechnology
Don't know of any flash memory that can maintain a galvanic connection in the absence of power.
Or for that matter directly switch a high-current load.

Re: Circuit Collection of Design Ideas from Electronics and EDN

Posted: Tue Apr 17, 2018 9:05 pm
by JR.
If that's a criteria maybe consider using a mechanical switch?

JR

Re: Circuit Collection of Design Ideas from Electronics and EDN

Posted: Tue Apr 17, 2018 9:19 pm
by mediatechnology
I think the requirement also included actuation via a pushbutton switch or momentary pulse.

Transistor Array Squares Control Current

Posted: Mon Jan 14, 2019 4:15 pm
by mediatechnology
"Transistor Array Squares Control Current," Burkhard Braach, EDN, January 22 1987.

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"Transistor Array Squares Control Current," Burkhard Braach, EDN, January 22 1987.

https://proaudiodesignforum.com/images/ ... 2_1987.pdf

"Enhanced Op Amp Delivers 100V P-P" Barry Kline, EDN, September 5, 1985.

Posted: Mon Jan 14, 2019 5:09 pm
by mediatechnology
"Enhanced Op Amp Delivers 100V P-P," Barry Kline, EDN, September 5, 1985.

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"Enhanced Op Amp Delivers 100V P-P," Barry Kline, EDN, September 5, 1985.

https://proaudiodesignforum.com/images/ ... 5_1985.pdf

Re: Circuit Collection of Design Ideas from Electronics and EDN

Posted: Fri Mar 29, 2019 3:45 am
by Jacko
LM317 smooths but doesn't regulate:

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LM317 Capacitance Multiplier

Re: Circuit Collection of Design Ideas from Electronics and EDN

Posted: Fri Mar 29, 2019 4:17 am
by mediatechnology
Thanks Jacko for posting.
I added a thumbnail for you.
I had never thought about using an LM317 this way.

Re: Relay-Based ON/OFF Flip-Flop Remembers State During Power Failure

Posted: Fri Mar 29, 2019 7:37 pm
by terkio
mediatechnology wrote:
Tue Apr 17, 2018 3:01 pm
Relay-Based ON/OFF Flip-Flop Remembers State During Power Failure

http://www.electronicdesign.com/analog/ ... er-failure

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Isn't it easier to remember state during power failure with one of those ?
Latching relay
Toggle switch