POWER SUPPLY CIRCUITRY

 

 

I HIGHLY RECOMMEND THESE POWER SUPPLIES

 

 

These items are available directly from the sources listed within the table. NOTE - I do not stock these items as the cost to bring them in and then turn around to ship to you would be crazy, so I list these as a convenience so you don't have to drive yourself nuts searching around the web to find them. The sites I have listed below may change product offerings from time to time. I don't follow up regularly so if you find the links are a dead end or if the pricing has changed please let me know so I can keep this page current.

 

WARNING

Be careful when selecting power supplies. If they're not type approved and they cause injury, fire, or death your house insurance will likely tell you to take a hike when you put in a claim. Check with your insurance company and know the rules! All selections I recommend are type approved and carry UL and/or CSA and/or NRTL safety approval. They might cost a buck or two more than some of the stuff you can find on various internet sites, but you can sleep well knowing they're safe to use.

 

20VA transformer

Perfect for the 852B

 16VAC @ 1.25 amp

UL listed for safety

January 2021 price 

USD $10.54 each

SKU: 5600K32

LINK TO McMaster-Carr:

https://www.mcmaster.com/5600K32/

40VA transformer

Perfect for the 821A or for two 852B

 16VAC @ 2.50 amp

Features resettable internal PTC protection

UL listed for safety

 

 

January 2021 price 

USD $14.21 each

SKU: 5600K19

LINK TO McMaster-Carr:

https://www.mcmaster.com/5600K19/

 

Main product image for Pyramid PS3KX 2.5 Amp Power Supply 13.8 VDC 2.5A 120-530 12VDC @ 2.5 amp supply

This is a great choice to power multiple 751D or 751K turnout switches

January 2021 price 

USD $34.98 each

SKU: 120-530  

LINK TO Parts Express:

CLICK HERE

Main product image for Pyramid PS9KX Power Supply 13.8 VDC 5A 120-534 12VDC @ 5.0 amp supply

Power even more 751D or 751K turnout switches and have plenty of reserve for layout lighting and other 12VDC circuits!

January 2021 price 

USD $39.98 each

SKU: 120-534 

LINK TO Parts Express:

CLICK HERE

 

 

 

UTB1 - UNIVERSAL TRANSFORMER BOARD

 

 

The UTB1 measures 6" X 3". Construction is double sided, 1/16", 1 oz copper, hot air surface leveled. Jumper options allow primary and secondary windings to be connected in parallel, series, or as split windings. This is a very versatile board that will open up all sorts of possibilities for your hobby power supply requirements.

 

 

UTB1 shown with transformers in place. You can choose from a wide variety of voltages and power ratings. Transformers can be sourced at DigiKey, Mouser, Newark, and most major electronics distribution companies, and even Ebay! Download the instruction set for a full listing of known transformers that can be used in the UTB1. 12VA or 24VA transformers can be used in either position.

 

UTB1 - PRINTED CIRCUIT BOARD - USD $18.00 each

 

DON'T FORGET THE LEDS !

25 pack 3mm RED diffused LEDs 25 pack 3mm GREEN diffused LEDs 25 pack 3mm YELLOW diffused LEDs 25 pack 3mm BLUE diffused LEDs 25 pack 3mm WARM WHITE clear LEDs 25 pack 3mm COOL WHITE clear LEDs
General purpose indicator use General purpose indicator use General purpose indicator use General purpose indicator use Interior building lighting, light standards - slightly yellow color HID lighting, weld simulator, light standards - slightly bluish color
$2.00/25 pack $2.00/25 pack $2.00/25 pack $2.50/25 pack $2.50/25 pack $2.50/25 pack

 

 
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HOME & INSTRUCTION SET DOWNLOADS 852B - 1.5 AMP HANDHELD THROTTLE 821 - DELUXE 3 AMP MEMORY THROTTLE BD3B BLOCK DETECTOR 751 and 751K TURNOUT SWITCHES

APB2 - 3 COLOR SIGNAL SYSTEM

POWER  CIRCUITS & TRANSFORMERS LIGHTING & EFFECTS BLOCK WIZARD - NEW FOR 2021 MODELER LINKS CONTACT & ORDERING

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