Re: Need help with a circuit

From: John Fields (jfields_at_austininstruments.com)
Date: 12/29/04 

Date: Tue, 28 Dec 2004 20:59:37 -0600

On 28 Dec 2004 17:13:11 -0800, "Dark Alchemist"
<GhostOfACPast@gmail.com> wrote:

>So, was my simplification still holding the same as the original?
>Btw, thank you everyone for you help. :) 

---
Dunno, for sure...
Modifying the circuit a little and looking at the circuit and the
truth table, we have:
               +2V                              
                |         Vcc                    
             [10.0K]       |                      
                |        [10K]                 
                +----|+\   |            
                |    |  >--+----+
x>---+--[10K]--------|-/        |
     |          |         Vcc   |             +-------+ 
     |       [10.0K]       |    |        0V---|b      |
     |          |        [10K]  +--B          |  _    |
     +--[10k]--------|+\   |      and AB------|a/b   y|---y
     |          |    |  >--+-------A          |       |
     |          +----|-/                 +----|a      |
     |          |                        |    +-------+
     |         GND                       |       S1
     |                                   |
     |                                   |                      
     |            +-------+              +-------+
     |        1V--|1      |  +----------------+  | 
     |  +------+  |   1-x²|--|1-x²  sqrt(1-x²)|--+
     +--|x   x²|--|x²     |  +----------------+  
        +------+  +-------+
                                      
The blocks on the bottom are your circuits, and sqrt(1-x²) is shown as
being routed through a switch where the output (y)is either sqrt(1-x²)
or 0, depending on whether is x is <=0V, between 0V and 1V, or >1V.
The AND gate only goes true when 0V<x<1V, with the result that the
switch will be turned off when x is outside the limits, and at those
times y will be equal to 0V, like this:
   x       A     B         y
--------+-----+-----+-------------
  <=0V     0     1         0
         
 0V<x<1V   1     1     sqrt(1-x²)     
  >=1V     1     0         0 
 
-- 
John Fields

Relevant Pages

  • Re: Momentary Switch Circuit
    ... >He's replacing a momentary switch. ... Since whatever circuit he's driving will work ... It should deliver close to Vcc. ... but primarily on the zener. ...
    (sci.electronics.design)
  • Re: Momentary Switch Circuit
    ... >>He's replacing a momentary switch. ... Since whatever circuit he's driving will work ... but primarily on the zener. ... >>It will be a spike, but it should be a spike whose ...
    (sci.electronics.design)
  • Re: The RCS: Voice Transcript
    ... Have you gone through the circuit analysis for the circuit that ... sustained power to the heater is what did it. ... That thermo switch ... It is now known, however, that the tank contained two protective ...
    (sci.space.history)
  • Re: HELP With Step-Down Transformer and Converter
    ... battery, this is not needed because a transformer is not needed. ... You need a disconnect so that all you have to do is flip the switch and everything ... The disconnect should be the first thing in the circuit connected to one ... You should turn off the breaker or switch while making ...
    (sci.electronics.design)
  • Re: Help needed for simple circuit troubleshoot
    ... >> circuit shown in the following diag. ... >> once the switch is turned on, but when the switch is turned off it takes ... The voltage drops to 5v on the emitter leg of the MOSFET. ... > it'll hold the load at between 2 and 4 volts below the battery voltage. ...
    (sci.electronics.basics)