|
B7971 Smart Socket
Redesign of B7971-V2
(USPS First Class Worldwide Shipping
included) |
|
|
Smart Socket PWB
(Schematic
(Rev-)
/
BOM /
PIC16F690 Image) |
 |
|
Smart Socket Parts Kit
Includes items 1-9 on the
BOM /
Labeling
/
Socket Soldering
| Includes: |
1 |
Programmed PIC16F690-I/P |
| |
15 |
2N5550BU TO92 140V/600mA |
| |
3 |
22K Resistor |
| |
6 |
27K Resistor |
| |
4 |
24K Resistor |
| |
17 |
33K Resistor |
| |
1 |
0.1uF 50V X7R Ceramic Capacitor |
| |
17 |
Mill-Max tube socket pins (See below) |
| |
1 |
Jumper (Lead clipped from resistor above) |
|
  |
|
Tube Socket Pins
Mill-Max
0327-0-15-15-34-27-10-0 |
 |
|
|
1 set, 17 pins |
$10.95 |
|
|
2 sets, 34 pins |
$14.95 |
|
|
4 sets, 68 pins |
$21.95 |
|
|
6 sets, 102 pins |
$29.95 |
|
SmartNixie HVPS-V (Vertical
Module)
Includes
8mm Dia
330uF EEU-FC1C331 input capacitor
1.8V to 16V input, 150V to 200V adjustable
output
4W @ 5V input = 23mA @ 180V
8W @ 12V input = 45mA @180V
0.65" x 0.80" x 0.45"
(Datasheet
/ Radj -
Calc /
ATE /
Warranty
/
Testdata) |
 |
|
SmartNixie HVPS-H (Horizontal
Module)
Includes
8mm Dia
330uF EEU-FC1C331 input capacitor
1.8V to 16V input, 150V to 200V adjustable
output
4W @ 5V input = 23mA @ 180V
8W @ 12V input = 45mA @180V
0.95" x 0.95" x 0.35"
(Datasheet
/ Radj -
Calc /
Eagle /ATE /
Warranty /
Testdata) |
 |
|
|
|
|
|
Notes |
|
The circuit created by Chris Barron (Yahoo group fixitsan2) covered
under a generous license
agreement
has been redesigned in Proteus CADD. This B7971 14
segment nixie driver board was originally done in the Eagle PCB design
program but needed a bit of cleanup for production PCBs to be ordered.
The circuit itself was changed as little as possible from the original
design.
I have written a GUI
to provide for testing serial communication to smart socket strings
and includes a font editor for the B7971 SmartSocket UDC (User Defined
Character) feature. See the
B7971 page and download the
Calculators installer <controllers><[1386] SmartSocket> for more
info. The
protocol is also detailed in the help section of the GUI.
Floating MCLRn (Pin 4)
-
If you have problems that look like EMI induced
resets, consider terminating the MCLRn pin of the PIC (Example).
If enough current is pushed through the pin (Or any pin for that
matter) from an external transient, the part can latch up and
brown-out reset itself or if the programming entry threshold of
10V is exceeded on the
/MCLR pin the device will behave unexpectedly.
|
|
Accessories |
|
Terminal blocks for P1
Socket pins for display tube
|
