Hello and welcome to Packard Motor Car Information! If you're new here, please register for a free account.  
Login
Username:

Password:

Remember me



Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who is Online
212 user(s) are online (167 user(s) are browsing Forums)

Members: 2
Guests: 210

DM37, Don B, more...
Helping out...
PackardInfo is a free resource for Packard Owners that is completely supported by user donations. If you can help out, that would be great!

Donate via PayPal
Video Content
Visit PackardInfo.com YouTube Playlist

Donate via PayPal



« 1 2 (3)

Re: Electronic Ignition for 23rd series w/288 ci
#21
Forum Ambassador
Forum Ambassador

HH56
See User information
Quote:
For e-ignition kits supposedly made for SIX volt systems then why isn't such a kit designed for something like 2.5 or maybe 3 volts trigger voltage instead of retaining the trigger spec for 12 volt systems????? I've never been able to get an answer to that question and i'm not exactly an EE so i havn't got a clue.


It has to do with the semiconductor properties and type. There are several families and all have different requirements and advantages or disadvantages. TTL and CMOS are the most common.

Most of these units use TTL (transistor-transistor logic). That is one of the first semiconductor families, fairly rugged & well proven. It's very reliable, capable of providing reasonable power output without additional power components and is relatively inexpensive.

It is designed to work at 5V & do not exceed limits are typically 4.7 to 5.2V. It's very unforgiving once the voltage threshold on either side is approached. Over and it burns up, under and the logic doesn't reliably trigger -- if it triggers at all. The low voltage threshold is the main downside for use on 6V. A poor connection or heavy starter load can easily drop battery below the limit. A few other issues but all in all, the good outweighs the bad for this type application.

CMOS is 12-15V. Very prone to damage by static electricity from careless handling and somewhat noise sensitive. Noise in this reference is electrical garbage on the power supply.

Newer microprocessor logic that use low voltages in the 3.3V range are becoming common but is low power and also very sensitive to handling. Would need more components and possibly even a second power supply to handle higher voltage and current output. The logic is also extremely noise sensitive and needs a lot of additional power supply filtering to ensure a very clean & stable supply voltage.

Posted on: 2012/9/1 21:53
Howard
 Top  Print   
 


Re: Electronic Ignition for 23rd series w/288 ci
#22
Home away from home
Home away from home

Robert Freeman
See User information
Howard,

Thanks for the in-depth research @ e-ignition systems and their issues, good and bad. It seems that the good ole reliable points & condenser are hard to beat. There's also the fact that under an electro-magnetic pulse event, the e-ignition systems would fail, whereas the points/condenser would keep on truckin'.

Posted on: 2012/9/2 16:16
Bob

IF EVERYTHING IS COMING YOUR WAY ...
- - - - - - - - - - - - - - - - - - - - - - - -
YOU'RE IN THE WRONG LANE!

'56 Executive Touring Sedan
 Top  Print   
 


Re: Electronic Ignition for 23rd series w/288 ci
#23
Home away from home
Home away from home

steve-52/200
See User information
hi ,i LOVE my points eliminator system ,the pertronix guy at the teck line was very helpfull teling me the exact part number ,worked spotlessly ,but they like thier voltage ,one thing that is very helpful is to get a beefy enough battery ,the 6 volt ones these days are less CCHr than whats specified i believe the spec is 1000 ,the 6 volt batteries that you can get now at the battery store are by in large pretty crappy .The pertronix module needs its voltage and they dont work wel if not fed .so a big 6 v forklift battery is the trick ,NAPA (4202 i think)you have to cut the battery tray in 1/2 and put in a piece of metal to make it longer 17 " ,but not wider it took me 1/2 hr for this mod i got better power and no hot start issues after this ,dont forget that old hard unmoving vacumb advance ,this should get swapped out ,its realy easy and could be done at the same time
so my points are in a plastic bag in my cool sliding glove box in case the pertronix thing blows

Posted on: 2012/9/22 0:28
 Top  Print   
 




« 1 2 (3)





- The following Google Ad-Sense Advert helps fund the cost of providing this free resource -
- Logged in users will not see these. Please Join and Donate to help support the website -
Search
Recent Photos
Photo of the Day
Recent Registry
Upcoming Events
46th Annual Texas Packard Meet
04/03/2025 - 04/06/2025
Packard Salon - Calling All Twelves
05/27/2025 - 05/29/2025
58th Annual National Meet
05/31/2025 - 06/06/2025
AACA Fall Meet (Hershey)
10/06/2025 - 10/10/2025
South Pacific Packard Club 2026 Rally
03/22/2026 - 03/28/2026
Website Comments or Questions?? Click Here Copyright 2006-2024, PackardInfo.com All Rights Reserved