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Improving Composite Output of 48K SpectrumI've been playing around with this Spectrum 48k I got inside a dK'tronics keyboard, because well I've already got two working other ones so why not..…
... of fluctuating DC levels. A capacitor separates the AC part.
The size of the series capacitor (22-100uF) and the load ... -
Improving Composite Output of 48K SpectrumI've been playing around with this Spectrum 48k I got inside a dK'tronics keyboard, because well I've already got two working other ones so why not..…
... of fluctuating DC levels. A capacitor separates the AC part...
...The size of the series capacitor (22-100uF) and the load ... />
He has a 100uf capacitor in series.
Now ... -
Improving Composite Output of 48K SpectrumI've been playing around with this Spectrum 48k I got inside a dK'tronics keyboard, because well I've already got two working other ones so why not..…
... and DC components. The blocking capacitor removes the DC offset so ... -
Improving Composite Output of 48K SpectrumI've been playing around with this Spectrum 48k I got inside a dK'tronics keyboard, because well I've already got two working other ones so why not..…
... and DC components. The blocking capacitor removes the DC offset so ... -
Improving Composite Output of 48K SpectrumI've been playing around with this Spectrum 48k I got inside a dK'tronics keyboard, because well I've already got two working other ones so why not..…
OK. This 100uF capacitor can (must!) be seen as ... different DC voltages charge this capacitor to different levels. When the ... in the wires toward the capacitor. Which current creates the 'negative ... can be taken from the capacitor.
Four sentences used ... -
Improving Composite Output of 48K SpectrumI've been playing around with this Spectrum 48k I got inside a dK'tronics keyboard, because well I've already got two working other ones so why not..…
... in the wires toward the capacitor. Which currents create the 'negative ... can be taken from the capacitor.[/QUOTE]
And now ... -
Improving Composite Output of 48K SpectrumI've been playing around with this Spectrum 48k I got inside a dK'tronics keyboard, because well I've already got two working other ones so why not..…
... by fitting a larger value capacitor (and as modern electrolytic capacitors ... . Hence the "in-line" "coupling" capacitor.
I hope this ... -
+3 Audio hates me with a passionHihi Since nobody seemed to have a spare +3B board, I've been trying to replace the audio entirely, aiming for a speaker inside the machine Since p…
... the [URL="http://www.secarica.ro"]www.secarica.ro[/URL] pdf and ... -
1x XC9572XL or 2x XC9536XL?I'm working on some projects which do not settle with only one XC9536XL CPLD. Main reason is of course the lack of user pins on the XC9536XL, I need …
... amount of inductance between the capacitor and the power pin) and ... -
Strange +3 HW IssueI a have a +3 with Issue 2 board system powers up ok and is useable as computer Drive works ok (tested on another machine) the drive however doesnt…
... ensure that the nothing discrete (capacitor / resistor) is not at fault ... -
1x XC9572XL or 2x XC9536XL?I'm working on some projects which do not settle with only one XC9536XL CPLD. Main reason is of course the lack of user pins on the XC9536XL, I need …
... to avoid vias between the capacitor and the power pin (vias ... -
+3 Audio hates me with a passionHihi Since nobody seemed to have a spare +3B board, I've been trying to replace the audio entirely, aiming for a speaker inside the machine Since p…
... the pulldown resistor and coupling capacitor for AY channel C (pin ... -
Composite mod - which one?On all my 16K/48K and Plus Spectrums I use to carry out the "Womble" Composite mod: [URL="http://womblesretrorepairshack.blogspot.de/2008/11/zx-spect…
A series capacitor removes the somewhat arbitrary DC ... devices have such a blocking capacitor in their input circuit anyway ... -
Problem with DIY Kempston Joystick InterfaceHello, Decided to try out Yarek's Kempston joystick interface: [img]http://8bit.yarek.pl/hardware/zx.joystick/kjschem.gif[/img] Having a few issues.…
... worth doing is putting a capacitor between Vcc and Gnd on ... -
Black and white composite displayJust pulled out an old CRT display and tried my trusty rubber key on it (comp modded), im using one of those scart adapters for an xbox to accept the…
... about the value of the capacitor in that mod, but I ... -
Black and white composite displayJust pulled out an old CRT display and tried my trusty rubber key on it (comp modded), im using one of those scart adapters for an xbox to accept the…
IMO the value of the capacitor is/was fine. If the ... -
Black and white composite displayJust pulled out an old CRT display and tried my trusty rubber key on it (comp modded), im using one of those scart adapters for an xbox to accept the…
... ]IMO the value of the capacitor is/was fine. If the ... -
+2 Grey ropey RF[url=http://postimg.org/image/y9s0xc5k5/][img]http://s18.postimg.org/y9s0xc5k5/P180413_13_13.jpg[/img][/url] Re-orientated TR4 as per normal but the …
... .
-Put a big capacitor (470 uf or 1000 uf ... -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
... go with the added 100uF capacitor method.
However in ... ; the main purpose of the capacitor is to remove any lingering ... Tv's should have a capacitor in the input circuitry already ... -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
The positive terminal of the capacitor should be connected to the ... use has a DC blocking capacitor at its input (very likely ... -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
... ]The positive terminal of the capacitor should be connected to the ... use has a DC blocking capacitor at its input (very likely ... -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
... 75 ohm resistor and 100uf capacitor going to video out on ... -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
... /> Note, that the 100?F capacitor is parallel to 2 diodes ... that is desired. Placing a capacitor in series to the output ... -
Video output questions...Two questions... [QUOTE]1. The yellow and blue colours seem out of phase on the display. Is this normal for an RF connection to the TV/monitor?[/QUO…
... noted that there was a capacitor from pin 16 of SCART ... -
48k + Spectrum Issue 4S Display IssueHi all! Brand new user here. Growing up I had a zx spectrum for a little bit, and recently I have bought a working 48k + Spectrum (Issue 4). I was…
... to have a longer life. Capacitor technology has improved such that ... one lead back under the capacitor and slide a bit of ... -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
... can just use an electrolyte capacitor to filter out some noise ... -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
... can just use an electrolyte capacitor to filter out some noise ... /> The purpose of the single capacitor often placed in series with ... -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
Placing capacitor between signal and ground will ... -
Plus D Voltage Regulator OrientationHi, I?ve got a Plus D Disc Interface circuit board without case from a friend. Sadly he sends it to me without care for proper packaging. So it arr…
... the plus of an electrolytic capacitor.
Roelof -
Composite video for 48k Capacitor orientationHello, My multisystem TV is acting up and I'm unable to navigate the menu to tune in the RF signal for my speccys. However the A/V input still works.…
... need the transistor or the capacitor or the resistor as they ... voltage at its collector. The capacitor lets no DC voltage to ... the TV.
Any electrolytic capacitor in series to the video ... (1) V. Therefore a (electrolytic) capacitor in series is not the ...
