Circuit Collection of Design Ideas from Electronics and EDN

mediatechnology · Post by **mediatechnology** » 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

JR. · Post by **JR.** » Tue Apr 17, 2018 5:02 pm

or there's flash memory...

JR

mediatechnology · Post by **mediatechnology** » Tue Apr 17, 2018 8:41 pm

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.

JR. · Post by **JR.** » Tue Apr 17, 2018 9:05 pm

If that's a criteria maybe consider using a mechanical switch?

JR

mediatechnology · Post by **mediatechnology** » Tue Apr 17, 2018 9:19 pm

I think the requirement also included actuation via a pushbutton switch or momentary pulse.

mediatechnology · Post by **mediatechnology** » Mon Jan 14, 2019 4:15 pm

"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

mediatechnology · Post by **mediatechnology** » Mon Jan 14, 2019 5:09 pm

"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

Jacko · Post by **Jacko** » Fri Mar 29, 2019 3:45 am

LM317 smooths but doesn't regulate:

LM317 Capacitance Multiplier

mediatechnology · Post by **mediatechnology** » Fri Mar 29, 2019 4:17 am

Thanks Jacko for posting.
I added a thumbnail for you.
I had never thought about using an LM317 this way.

terkio · Post by **terkio** » Fri Mar 29, 2019 7:37 pm

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

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

Pro Audio Design Forum

Circuit Collection of Design Ideas from Electronics and EDN

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

Re: Circuit Collection of Design Ideas from Electronics and EDN

Re: Circuit Collection of Design Ideas from Electronics and EDN

Re: Circuit Collection of Design Ideas from Electronics and EDN

Re: Circuit Collection of Design Ideas from Electronics and EDN

Transistor Array Squares Control Current

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

Re: Circuit Collection of Design Ideas from Electronics and EDN

Re: Circuit Collection of Design Ideas from Electronics and EDN

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