My answer: don't regulate. Relays run fine on a wide range of voltages. I typically run 24 volt relays on circuits where the voltage can range from 20 volts to 35 volts, with 3 volts of ripple. Regulation? Schmegulation. -- Lawrence Lile ----- Original Message ----- From: "Peter Barick" To: Sent: Monday, July 09, 2001 1:17 PM Subject: Re: [EE]: Voltage regulation for circuits with relays, how? > John, > Assuming you keep that given pwr adptr and are not running the relay > off of the regulator, have you tried this: > Have a high val C charged thru a low val R off the adptr. This is used > for the Rly and minimizes the drain at the input to the reg. > > Peter, PIC Newbie > > >>> john_fm_waters@HOTMAIL.COM 07/09/01 12:49PM >>> > Hi All, > > >>I'm using a 78L05 to keep a stable 5V supply to a simple > microcontroller > >>circuit, the power comes from a standard home-use 9V, 380Ma power > adapter, > >>it works fine so far. However, I want to add a relay to my circuit > > >>John > > > > _________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at > http://www.hotmail.com. > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body