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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
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...
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 3:15 pm
by mediatechnology
"Transistor Array Squares Control Current," Burkhard Braach, EDN, January 22 1987.
"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 4:09 pm
by mediatechnology
"Enhanced Op Amp Delivers 100V P-P," Barry Kline, EDN, September 5, 1985.
"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:
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
Isn't it easier to remember state during power failure with one of those ?
Latching relay
Toggle switch