In this module there have been used 8 relays with
one change-over switch each as well as 8 LED's to display the status.
You can use i.e. the very cheap OMRON G5LE-1 relay das can endure switching
voltages of 250 VAC/125 VDC at powers up to 10 ampere. Since the conductor
pathes are only about 35 um thick you should plate the switching line
additionally with tin-solder or use only small power. The maximum switching
power of the relay is 1200 VA/240 W.
IMPORTANT: In the event that all relays
are active at the same time the circuit needs about 450mA, that will
be taken in the below setup from the 5 Volt voltage regulator of the
Extension Board. The voltage regulator (equiped with a cooler) is able
to take that but will get, depending on the input voltage, very warm.
If you have a "fitting" power supply of about 12 or 24 Volt
available you should use in any case "G5LE-1 12V" or "G5LE-1
24 V" relays, which work with 12 resp. 24 Volt. Thereby you should
detach only the VCC line of the module from port pin 1 and connect it
with port pin 3 instead. During use of the 12 Volt relays "G5LE-1
12V" the power consumption reduces thanks to the higher inner restistance
(360 Ohm) to about 270mA, at the 24 Volt relays "G5LE-1 24V"
to about 140mA. In both cases the voltage regulator of the Experimenting
Board doesn't get burdened anymore.
We don't offer an example program in this case
since the activation of the module is quiet simple. A high signal at
a pin activates the proper relay and the LED is illuminated.
To download right-click the link and select
"Save target as..." or "Save link as...".
Data:
| Developed from: |
Christian Schmuck
<Smoenk@t-online.de> |
| Suitable for Experimenting
Board: |
I and II |
| Attachable to extension port: |
Can be attached to any port. |
| Adjustments at DIP-switch: |
No special adjustments necessary.
XTAL 1 and XTAL 2 should be "ON" so the MC gets a tact signal. |
| Power consumption: |
Depending on the number of triggered
relays and the type this module can use up to to 450mA... |
| Circuit board / Layout: |
Simple layout. Single sided etched
circuit board with only three bridges. |
| Limitations: |
At port 3 of
the 20 Pin Flash MC's there is no port line 6. This of course is why
K6 can't be triggered on that port. |
Schematic:
Links related to this page:
. General...
. Simple
display module...
. 8
digit 7 segment display module...
. RAM
module...
. RS
232 module...
Links related to this and other pages:
.
Flash Microcontroller Experimenting Board
I...
. Flash Microcontroller Experimenting
Board II...
. Flash Microcontroller Programmer I...
. Flash Microcontroller Programmer II...
. Prog-Studio 6
software...
| • Copyright 1999 - 2007 by Batronix Elektronik
• |
|
