6 May
1999
6 May
'99
7:26 a.m.
Flip flop should be easy too. This one looks rather
like an ECL logic gate:
+V DC
|
<
<
|
+--+--+
| |
(:) (:)
| |
A--+ +--B
| |
Nope! If left is not list then there is no current flow across the
resistor. To ignite the left lamp a voltage (negative maybe 25V) would
have to be applied at A. To extinguish left a voltage of +25(or more)
volts would have to be applied. Generally this kind of logic is pulse
coupled using transformers or capacitors. Note a bistable was done in the
case mentioned with one Neon.
Doing ascii logic from telnet seesion is far to slow for me to give a
complete circuit.
Allison
>
< <
>
< <
| |
GND GND
Pull A to ground. Lefthand neon lights. Voltage on right hand neon too low to
maintain discharge and it goes out. Same works for B - RH neon lights and
voltage at the common anode too low to maintain LH neon, which goes out.