Search found 5 matches

by Eric Chambers
Sat Jan 12, 2002 10:38 am
Forum: General Discussion
Topic: Actuator control signal
Replies: 6
Views: 2126

Re: Actuator control signal

Sorry about the lack of info, I'm a first time poster! When the control job was done the contractor was given the specs for the wrong job & simply wired the two in parallel. I can remember him saying "What's the point of having a 1/3 & 2/3 valve and wiring them in parallel. You could do the same job...
by Eric Chambers
Fri Jan 11, 2002 4:26 pm
Forum: General Discussion
Topic: Actuator control signal
Replies: 6
Views: 2126

Re: Actuator control signal

First, I made a mistake with the control signal, it is 0 to 10 Vdc not 2 to 10 Vdc. I edited the original post. I am making hot water for heating purposes. The valve actuator has an internal controller than strokes the valve to the position indicated by the control signal. The microcontroller is loo...
by Eric Chambers
Wed Jan 09, 2002 4:36 pm
Forum: General Discussion
Topic: Actuator control signal
Replies: 6
Views: 2126

Re: Actuator control signal

I Left out some details. They are steam valves, Valve #1 is 1/3 and valve #2 is 2/3 of capacity. In order to get 100 of capacity these valves must open and close in sequence. 25% call for steam = valve #1 open about 80%, valve#2 is closed. If the load changes to 50% call for steam then valve #1 open...
by Eric Chambers
Tue Jan 08, 2002 6:10 pm
Forum: General Discussion
Topic: Cell phone antenna
Replies: 1
Views: 1447

Re: Cell phone antenna

I tried it on a nokia 5160 and got an extra bar on the signal meter.
by Eric Chambers
Tue Jan 08, 2002 6:03 pm
Forum: General Discussion
Topic: Actuator control signal
Replies: 6
Views: 2126

Actuator control signal

I am trying to control 2 valve actuators with one control signal (0 to 10 Vdc). Actuator #1 must be driven first to full open before Actuator #2 can start to open. On closing,it is Actuator #2 then #1. I thought I could do it by taking the control signal and making 2 signals. Input of 0 to 2.5 Vdc =...