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Sir, you are the Solar Dufus of the universe......I have successed the world first solar backpack Television
In article <d4qfsc$5545@imsp212.netvigator.com>,
"developer" <noemail@nospam.com> wrote:
I have successed the world first solar backpack Television
Sir, you are the Solar Dufus of the universe......
Me
oooooohhhhhh "t-t--t-ttthe 1st solar powere b-b-bbbackpack t-t-ttv".... um
does it got hbo? roflol!
"Jim Douglas" <james.douglas@genesis-software.com> wrote in message
news:-oidnWMOppTEOuvfRVn-qQ@comcast.com...
Let us know when you get a 32" plasma screen to run from gas emitting
from
your arse!
"Me" <Me@shadow.orgs> wrote in message
news:Me-2AE693.08585302052005@netnews.worldnet.att.net...
In article <d4qfsc$5545@imsp212.netvigator.com>,
"developer" <noemail@nospam.com> wrote:
I have successed the world first solar backpack Television
Sir, you are the Solar Dufus of the universe......
Me
---Why is it that no one replied to this guy for several weeks, till one person
did and you simply reply with the same msg, worded differently?...
Why even bother showing yourself if you're no unoriginal?... It's like some
guy inventing a new lightbulb and a bunch of jackasses such as yourself
painting it a different color and running to the patent office screaming
that you've a new idea..
Hi, Mark. Novice and newbie questions always welcome here.Hi there
I am a novice at electronics so please bear with me!
I need to design a latching electronic switch with a momentary push switch
as a trigger. When the trigger is pushed, the switch will latch closed. When
the trigger is pushed again the switch will toggle back to the open
position. The switch needs to be able to break/supply power a 12v relay. If
the circuit loses and regains power the switch should default back to the
open position.
For reasons I won't go in to at this stage it is not possible just to use a
latching switch to supply the power to the relay.
Hopefully someone can help me if this design is possible!
Thanks
Mark
Hi, Mark. Try this (view in fixed font or Notepad):One of the legs of each momentary switch is connected to a common ground,
which comes from a single point on the xbox pad, then daisy chains to each
switch. This includes the four switches for the joystick I think. The other
side of each switch then goes to its own point on the pad. I haven't
measured what is going across the switch when it is closed, but I can do
this if necessary.
Is that enough information? I can post more or a schematic if you need me
to.
I really appreciate all your help!
Thanks
Mark
pressed. First, you need to get a power supply voltage which is theFrom your description, all 8 switches switch a logic level voltage to
GND when they are pressed, and show a logic level high when they're not
The drawing wasn't too clear on something -- It's important that theHi, Mark. Try this (view in fixed font or Notepad):
` (X = X-Box pullup resistor)
` T
` ---
` .---o o---X---------.
` | |
` | T |
` | --- |
` o---o o---X--------.| VCC
` | || 4078 +
` | T || 8-input |
` | --- |'-o| OR(Pin 1)/ .-. VCC VCC
` o---o o---X-------.| | NOR(Pin 13) | | + +
` | |'--o| | | | |
` | T | | 220K'-' .--o---o--.
` | --- '---o|__ | | |
` o---o o---X------. -|>=| 1 | | |
` | '----o|1 |------------|----o |
` | T -|__| | | o---->A
` | --- .----o| | | 555 |
` o---o o---X------' | o--o-o |
` | .---o| +| | | |
` | T | | 10uF --- '-o |
` | --- |.--o| --- | |
` o---o o---X-------'| | | '--o---o--'
` | |.-o| | | |
` | T || === === ==> ` | --- || GND GND GND
` o---o o---X--------'|
` | |
` | T |
` | --- |
` o---o o---X---------'
` |
` ==> ` GND
`
`
` VCC VCC
` + +
` | |
` | |
` .-----------------------. - C|
` | | ^ C|
` | | | C|
` | .--------. | | |
` | | | | | |
` | | === | '---o
` | .-----o------.GND | |
` | | S | | ___ |/
` '----oD Q o--------|___|- -| TIP120
` | | | 10K | |
` | 1/2 4013 | | .-. |
` | | | | | |
` A>---------o CLK | | 10K| | |
` VCC | | | '-' |
` + | | | | |
` | | | | | |
` .-. | Q'o-----' === ==> ` 10K | | | | GND GND
` | | | R |
` '-' '-----o------'
` | |
` o-----------'
` |
` .1uF ---
` ---
` |
` ==> ` GND
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de
From your description, all 8 switches switch a logic level voltage to
GND when they are pressed, and show a logic level high when they're not
pressed. First, you need to get a power supply voltage which is the
same voltage as the power supply of the logic circuit you're
interfacing (+/- 0.2V). Once you've done that, get a 4078 (8-input
OR/NOR), a 555, and a 4013 to do your job, along with the handful of
components shown.
Not so elegant, but it should do the job. The CD4078 has 8 inputs and
two outputs -- OR (pin 1) and NOR (pin 13). The OR will only go low
when all 8 inputs are low (what you want). That signal then triggers a
555, which is on for about 2 seconds (giving you your debounce) and
clocking a 4013 set up as a toggle F-F. The R/C at the reset input
ensures that the circuit will power up with the transistor off.
You should be able to put all this on a small perfboard, and you'll be
good to go with the Pretendo relay switch.
Good luck
Chris
Randy GrossYou can't even read....
"DT" <dtadeo@netvigator.com> wrote in message
news:d6l738$b741@imsp212.netvigator.com...
u wanna to have solar backpack too?? a-ha-ha!
http://www.geocities.com/aaawelder/('> Homebuilt Arc Welders <')
1) Excepting digital, most modern radios use a tuning diodes such as:
Industry Number : NTE618
NTE Device Number: NTE618
DIODE-AM RADIO TUNING DIODE
Simple non-hetrodyne radio application. This nifty diode has about a 10:1
capacitance change effected by applying a tuning voltage. For a parallel
tuning circuit you will need to add additional blocking diodes and a
bypass
cap. Use the simpler series resonant circuit. In either case a biasing
network applys a tuning voltage to the diode. If you google this device
NTE918 you probably can find examples of circuits. The frequency formulas
are the same as for a variable capacitor which is actually what this diode
becomes in the circuit.
Freq = 1 / ( 2pi * squareroot of ( L*C) )
Where:
Freq is in cycles per second
L is in henries
C is in farads
You can use a series resonant circuit, tuning diode in series with your
inductance. The NTE 918
works for the AM band. Google the specs, plug in its midrange capacitance
in
Farads ( picofarads times ten to the -12) and the middle of the AM band
freq. (~ 1,200,000 cycles / second) into the formula above to calculate
the
needed inductance in henries.
Here is the mystery. You will also need to fix
the bandwidth (Wbw) to 10,000 AM. For a series circuit,
Wbw = R / L
You do this by fiddling with the source resistance of the network feeding
the voltage to the tuning diode. Use the Thevenin equivalent resistance of
the source.
2) Phase lock loops can be used to lock onto an adequately strong carrier
signal.
"Roy Ingham" <brif8@hotmail.com> wrote in message
news:Qm3le.68814$IO.35140@tornado.tampabay.rr.com...
Hi All
Where or What is the formula to calculate Radio Frequencies?
Variable Capacitor (I assuming) as the tuning dial, then what
give you the range of Freq to tune into. Yes I'm wanting to
start my first electronics project and would like to build a
simple yet effective radio, driven on a 9V battery.
Also Automatic tuners or scanners found on modern car radios
do, these detect the strongest Voltage / ? to determine that
the current frequency is a good channel to lock into. You
know you press the button and the radio runs through the
stations, and stops at some point. Missing some stations.
What makes it stop a detection in strong voltage or what ??
Thanks in advance
B
Haven't you ever seen a weed wacker? That's _exactly_ what they do,At first glance, this seems a joke but, I can remember a guy tying a
length of fishing line to a motor wanting to cut his grass. That must
have been funny to someone too!
---Yeah Rich, look, maybe together, if we both try to gang up on the troll,
maybe I'll be more successfull than last time when I got bitched out real
bad.
signed
John (the informant) Fields