Hobby Electronics Basics

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Connecting PSX DualShock pad to PC

Hi, I'm interested on connecting PSX (Playstation One) DualShock gamepads to pc. I know there're tons of schematics out...
0 comments posted 21yrs
posted by something
0 comments posted 21yrs posted by something

DC Wave Questions

2 questions about a fully DC Sine Wave....let's suppose you have a DC Sine wave which varies from +5V to +15V peak-to-p...
362 comments posted 21yrs
posted by jackbruce9999
362 comments posted 21yrs posted by jackbruce9999

2SB178 and BC108

Hi. I'm wondering if there is any match pair for PNP transistor 2SB178. Also the match pair fo NPN transistor BC108. is...
1 comments posted 21yrs
posted by padmow_69
1 comments posted 21yrs posted by padmow_69

How does a wind-up generator work?

Hi guys: How does a wind-up generator (like in a wind-up radio) work? Is it simply a dynamo that charges a NiCd battery,...
2 comments posted 21yrs
posted by eromlignod
2 comments posted 21yrs posted by eromlignod

IED139D

Hi. Can anybody please supply me with data on the IED139D ic. All I know is that it is not the same than a LM139 for ins...
0 comments posted 21yrs
posted by cassiecj
0 comments posted 21yrs posted by cassiecj

Scope

(1)The number of cycles shown on a scope for a given frequency is determined by? *Sweep Frequency *Volatge Scale *Ohm's...
13 comments posted 21yrs
posted by saqlain92110
13 comments posted 21yrs posted by saqlain92110

Identify High Current Power Supply Transformer

Hi Gang, I have a large and heavy power supply transformer that is part of a high current power supply project that was...
1 comments posted 21yrs
posted by mjdrum
1 comments posted 21yrs posted by mjdrum

moved

I have reposted this thread in circuit design. i thought it would be more suited there. sorry for any inconveniance.
1 comments posted 21yrs
posted by jasonday84
1 comments posted 21yrs posted by jasonday84

8 bit & 4 bit transistor register

1)An 8 bit transistor register has output voltage of LHLHLHLH,What is equivalent decimal number being stored? (2) A 4 b...
15 comments posted 21yrs
posted by saqlain92110
15 comments posted 21yrs posted by saqlain92110

DC applied to primary of transformer

I want to apply DC safely to the primary of a transformer,how can i do?by *When limiting resistance is in series. *When...
7 comments posted 21yrs
posted by saqlain92110
7 comments posted 21yrs posted by saqlain92110

Better DC to AC inverter: Tripplite or Xantrex?

My situation: I'm driving across the country and want to get a power inverter for my laptop and cell phone so I can use...
11 comments posted 21yrs
posted by detroitstylz
11 comments posted 21yrs posted by detroitstylz

headlight alarm circuit

Found this circuit on the internet.. It is intended to be a headlight alarm (warning) to prevent one from leaving light...
7 comments posted 21yrs
posted by cm08
7 comments posted 21yrs posted by cm08

Permanent Magnet Alternator Torque and volts?

Is there a 'rule of thumb' for figuring out much torque it takes to put out xx volts and yy amps from a PMA given the g...
2 comments posted 21yrs
posted by bobgardner
2 comments posted 21yrs posted by bobgardner