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Documents What Active Components Do You Need? - Workbench Wednesdays 29
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  • Author Author: Matt
  • Date Created: 8 Oct 2020 4:55 PM Date Created
  • Last Updated Last Updated: 14 Oct 2020 7:24 AM
  • Views 3728 views
  • Likes 15 likes
  • Comments 11 comments
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What Active Components Do You Need? - Workbench Wednesdays 29

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Active components like transistors, BJTs, MOSFETs,  and integrated circuits (ICs) make it possible to control circuits. This video explains the must-have NPN and PNP BJTs. For MOSFETs there are a couple of N-Channels and P-Channels to consider. Basic ICs include some digital logic stuff from the 7400-family as well as the venerable 555-timer to have on-hand. We did not forget Op-Amps either. Spoiler: We do not recommend the ua741!

 

Supplemental Content:

  • The Learning Circuit 27: How Transistors Work
  • The Learning Circuit 48: Intro to Integrated Circuits
  • The Learning Circuit: 62: How 555 Timers Work
  • The Learning Circuit 68: How Op Amps Work
  • The Learning Circuit 75: How Shift Registers Work

Bill of Materials:

Product Name Manufacturer Quantity Buy Kit
Op-Amps
LM358 - Audio TI 1 Buy Now
LM324 - General Purpose TI 1 Buy Now
TL074 - JFET TI 1 Buy Now
Transistors
2n3904 - BJT NPN Multicomp 1 Buy Now
2n3906 - BJT PNP Multicomp 1 Buy Now
2n7000 - MOSFET On-Semi 1 Buy Now
IRFZ44NPBF - N-Channel FET International Rectifier 1 Buy Now
IRF4905 - P-Channel FET International Rectifier 1 Buy Now
Regulators
MC7805BTG - 5 Volt Regulator (modern 7805) On-Semi 1 Buy Now
LM317BTG - Adjustable Positive Regulator TI 1 Buy Now
LM337TG - Adjustable Negative Regulator TI 1 Buy Now
Integrated Circuits (ICs)
ICM7555IPAZ - CMOS 555 Renesas 1 Buy Now
SN74HCT245N - Bidirectional Octal Buffer TI 1 Buy Now
74HCT595 - Shift Register (SMD...) Nexperia 1 Buy Now

 

Workbench Wednesday
element14 presents  |  About James |  Workbench Wednesdays

  • mosfet
  • shift register
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  • op-amp
  • p-channel
  • npn
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Top Comments

  • airbornesurfer
    airbornesurfer over 4 years ago +3
    I'm a fan of the 2n2222 as a general purpose NPN myself, but this is a great starter kit! Aaaaaannnnd added to cart....
  • baldengineer
    baldengineer over 4 years ago in reply to DAB +3
    I completely agree. I almost suggested some 74xx-series gates. But i felt like they wouldn't be "must have" unless someone was specifically working with older logic chips. The more I dive into 8-bit computer…
  • DAB
    DAB over 4 years ago +2
    Good episode. You covered the basic active components. Depending upon the types of circuits you want to create, the list can get out of hand very quickly. DAB
  • baldengineer
    baldengineer over 4 years ago in reply to shabaz

    Good suggestions shabaz. Psst, Diodes and LEDs were covered in the passive components list. image

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  • shabaz
    shabaz over 4 years ago

    Great to see the ICM7555, it's one of the nicest 555 variants : ) Maybe some Schottky diodes might be needed for the DC-DC converter enthusiasts, perhaps 1N5819.

    For the SMD users, jellybean SMT parts like BAT54 (low power Schottky), SS13 (high power Schottky), BAS16 (small signal diode), and BSS138 and BSS84 (N-ch and P-ch low power MOSFETs), BC817 and BC857 (low power NPN and PNP) and lots of LEDs!

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  • ralphjy
    ralphjy over 4 years ago

    Good list.  Made me think of a part that I used to use all the time - the ULN2003 - a Darlington array of open collector relay drivers with integrated fly back diodes.  Haven’t used one for a while but it’s great for the occasion when you have to drive small motors or higher voltage relays or signals.

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  • baldengineer
    baldengineer over 4 years ago in reply to DAB

    DAB  wrote:

    I really lucked out at an auction, where I picked up a spare chip box for an old PDP series minicomputer for about 5 USD

    Wow! I am very jealous!

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  • DAB
    DAB over 4 years ago in reply to baldengineer

    Luckily I have a nice supply of 74xx series, so I have most of what I need.

    Plus I have a lot of old circuits socketed, so I can always scrounge logic chips from those.

     

    I really lucked out at an auction, where I picked up a spare chip box for an old PDP series minicomputer for about 5 USD.

     

    DAB

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  • KalebTheMaker
    KalebTheMaker over 4 years ago

    2n2222's are all I have left right now. Great list James, I will be restocking!

     

    -Kaleb

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  • airbornesurfer
    airbornesurfer over 4 years ago in reply to baldengineer

    This is fair. I also couldn't tell on my tiny screen  

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  • baldengineer
    baldengineer over 4 years ago in reply to DAB

    I completely agree.

     

    I almost suggested some 74xx-series gates. But i felt like they wouldn't be "must have" unless someone was specifically working with older logic chips.

     

    The more I dive into 8-bit computer repairs, the more I wish I had a better assortment of 7400-series stuff though. I never seem to have the right gates or the right logic family.

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  • baldengineer
    baldengineer over 4 years ago in reply to airbornesurfer

    Me too, but I wanted a nice 3904 and 3906 complemntary pair.

     

    I forgot now if it was labled, but the TO-18 shown was a 2n2222.

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  • DAB
    DAB over 4 years ago

    Good episode.

     

    You covered the basic active components.

    Depending upon the types of circuits you want to create, the list can get out of hand very quickly.

     

    DAB

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