Have to ask- Anode to ? Cathode to ? Gary McCartney wrote: > 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/ > -- Roger G. Mr. Fix-It Harrisburg, PA 17110 WebSite- http://mrfixit.netfirms.com Alternate - rogerfixit@xxxxxxxx FAX 510-740-3641; Tel: 717-540-0799 (shop) ----------------------------------------------------------------------------- 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/