Ham Radio 360

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Ham Radio: Workbench-3 Power Supplies

Posted: 01 Aug 2016 11:00 PM PDT
http://hamradio360.com/index.php/201...ower-supplies/

In this episode of The Workbench, GeorgeÂ*@KJ6VUÂ*and JeremyÂ*@KF7IJZÂ*take a
look at power supplies for working on radios and electronic projects.

They breakdown the different types of power supplies, what to look for and
make some shopping suggestions.




Segment 1 News and Updates



HARA Arena closes.Â* Dayton Hamvention looking for a new venue.

Welcome our new sponsor MCM Electronics and use the promo code RADIO5 to
get 5% off your next order.

http://www.mcmelectronics.com/


Check out our listener, Tim, KE4KE’s nice blog site with lots of great
pictures and articles on portable operating at www.ke4ke.com

Our listener, Vance N3VEM, is hitting the road to do a NAPOTA-Thon 12
national park activations in a 24 hour period.Â* Great blog site: Â*Projects
and musings about ham radio from a new operator at http://www.n3vem.com


Our friend John, VE3IPS, makes a great video review showing how he sets up
his PackTenna Mini antenna.Â*Â*
https://www.youtube.com/watch?v=z4RO...&feature=share

Whats on Georges bench?

Shipped off the repeater and control system to Cale.Â* It’s a pair of
Motorola CDM1550 radios and a Sierra Radio Systems repeater controller
www.sierraradio.net

Sneak preview announcement … The first HamRadio 360 Workbench build project
will be an antenna analyzer.Â* The design was created by Beric, K6BEZ.Â* You
can see Beric’s prototype pictures and article on the project here…


http://www.hamstack.com/project_antenna_analyzer.html


The official build project is redesigned and updated on a single 3�x4�
PCB.Â* You can build the whole thing yourself from your own junkbox of parts
or you can get a full or partial kit.Â* The details are still being worked
out.Â* Stay tuned for more.

Whats on Jeremys bench?

Battery Testing comparing AGM, A123, and Bioenno
https://www.bioennopower.com/collect...ant=1014198656

Raspberry Pi Clock from N0BEL
http://n0bel.net/v1/index.php/projec...berry-pi-clock

Repair Tytera MD-380 charging cradle






Segment 2 – POWER SUPPLIES



2 Categories


“Ham� 13.8 volt radio power supply


Bench / Lab power supplies




Ham “High Current� power supply considerations and tradeoffs

Linear vs Switching?

Variable Voltage vs Fixed Voltage?

Meters vs no meters?


What do you add as you go up in price?


Precision


Linearity


Low Noise/Low Ripple


More current/power


Computer connectivity/programmability




Linear 12V High Current Power Supply: Astron RS-35A $180
http://www.hamradio.com/detail.cfm?pid=H0-004434

Switching 12V with Analog Meters: Samlex 1235M $130
http://www.mcmelectronics.com/produc...235M-/72-12820

Switching Variable Voltage with Meters: Powerwerx SPS-30DM $160
http://www.hamradio.com/detail.cfm?pid=H0-011684

Switching 12V: Powerwerx SPS 30DV $110
http://www.hamradio.com/detail.cfm?pid=H0-010662

Switching 12V Variable Voltage: Alinco DM-330MVT $160
http://www.hamradio.com/detail.cfm?pid=H0-003728


Accessories


West Mountain Radio Rig Runners
http://www.westmountainradio.com/rigrunner.php


Low Loss Power Gate Battery Charging System $50
http://ki0bk.no-ip.com/~pwrgate/LLPG/Site/LLPG.html


West Mountain Radio Super PWRGate PG40S $140
http://www.hamradio.com/detail.cfm?pid=H0-007770


Power Pole Distribution:Â* https://powerwerx.com/powerpole-power-distribution


Anderson Power Poles:Â*
https://powerwerx.com/anderson-power...-sb-connectors




Key specs to look for


0-20v or more


Single ended 0-20v voltage reference to ground


Maybe Dual ended +/- 15 volts




Low ripple (1mv p/p) what is ripple?


EEVBlog Ripple and Noise https://www.youtube.com/watch?v=Edel3eduRj4


2-5 amps


Meters for Volts and Current (digital or analog)


Current limiting adjustment


Resettable output breaker


Short circuit protection



What do you add as you go up in price?


Precision


Low Noise/Low Ripple


More current/power


Computer connectivity/programmability




EEVBlog earth ground vs ground referenced circuit:Â*
https://www.youtube.com/watch?v=xaELqAo4kkQ



George’s old favorite:Â* used Â*B+K Dynascan 1601 Â*0-30v 0-2A resettable
breaker Â*($60-$100)

Product Recommendations

Tenma 72-8345A 1-36V 3A Power Supply $150
http://www.mcmelectronics.com/produc...345A-/72-8345A

Tenma 72-8350 1-20V 5A Power Supply $160
http://www.mcmelectronics.com/produc...8350A-/72-8350

Tenma 72-9465 1-36V 5A USB Controllable $200
http://www.mcmelectronics.com/produc...-9465-/72-9465


GW Instek GPS-1850D $200
http://www.mcmelectronics.com/produc...850D-/72-12100



Common mode choke reference:Â* http://www.karinya.net/g3txq/chokes/

This posting includes a media file:
http://media.blubrry.com/fo_time_the...Hand_Tools.mp3