thanks to all of you guys. I am so appreciative with this list and It litterally pays my bills. I will support this list for as long as I work on tvs. If anybody needs anything from me dont hessitate to ask. Happy New Year to all Pete Perdomo Tv Inc Since 1972 Miami.Fl ----- Original Message ----- From: "Gary McCartney" <gary@xxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Friday, December 30, 2005 11:11 AM Subject: [TechAssist] Re: good sub 78m05a > Yes, certainly a 78M05 can be subbed with a 7805. 78M05 is rated 0.5 > amps and a 7805 is rated 1 Amp. There is no reason to even stock the > 78M05, just have a few 7805's on hand. Same goes for any other regulator > in the family- 7812, 7808, etc. > > Generally speaking, over the years reading these tech emails, I am > amazed at the lack of knowlege about these IC's, they are basic > fundamental electronic components like a diode or a transistor. Any > reasonings? > > Did you know that you can raise the output voltage of a 78xx series > regulator, by inserting a zener diode from the ground pin of the IC to > ground? If you want an 8V regulator but only have a 5V regulator 7805 in > stock, you can insert a 3V zener from pin 2 of the reg to ground and get > an 8V reg. (as long as the back plane of the regulator IC is not > connected to ground itself because it is common with pin 2, unless of > course we are talking about a plastic backed IC) > > > > > Gary McCartney > > McCartney Electronics > Guelph Ontario Canada > Est. 1984 > email: gary (at) number63.ca > > > > > > > > pete wrote: >> can i use a 7805a to sub a 78m05a anyone has done this before? its a 5 >> volt regulator from a sony power supply model is kv35v35 >> Perdomo Tv Inc Since 1972 >> Miami.Fl >> ----------------------------------------------------------------------------- >> This Email List is accessible to the general public through search >> engines. Remove: http://www.tech-assist.org/remove.htm >> Set Vacation >> mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation >> Lost Password: http://www.tech-assist.org and select "Login Problems?". >> Email Archives: //www.freelists.org/archives/techassist/ >> > > ----------------------------------------------------------------------------- > This Email List is accessible to the general public through search > engines. Remove: http://www.tech-assist.org/remove.htm > Set Vacation > mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation > Lost Password: http://www.tech-assist.org and select "Login Problems?". > Email Archives: //www.freelists.org/archives/techassist/ > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.371 / Virus Database: 267.14.9/217 - Release Date: 12/30/2005 > > ----------------------------------------------------------------------------- This Email List is accessible to the general public through search engines. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/