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zBitx power supply

Rafael Diniz All Messages By This Member #118361 Could anyone recommend an affordable power supply I can use with the zBitx, to use with 110 or 220 VAC, 50Hz and 60Hz? Cheers, Rafael OpenPGP_signature.asc OpenPGP_signature.asc
Gordon Gibby KX4Z All Messages By This Member #118362 Rafael, I would take a 12 V laptop power supply from a thrift store, and then add a bunch of series 5 or 10 amp silicon diodes until you get the voltage down to about 8 V. Six diodes in series should do the trick You can probably get the laptop power supply rated for 3 A or so for five or $10 at the thrift store and you can get the diets for less than $10 from Amazon. So you’ll have about $20 into the project. I hope that helps! Be careful with polarity! Gordon kx4z toggle quoted message Show quoted text On May 21, 2025, at 19:08, Rafael Diniz via groups.io <rafael@...> wrote: ?Could anyone recommend an affordable power supply I can use with the zBitx, to use with 110 or 220 VAC, 50Hz and 60Hz? Cheers, Rafael <OpenPGP_signature.asc>
David Wilcox K8WPE All Messages By This Member #118369 Instead of all the diodes get a Drok voltage/current controller from Amazon or other places. I can then use the battery packs from my yard power tools and reduce them down to whatever voltage I need for the project at hand. I mostly use one with my 12 volt BioEnno 12 volt battery packs. The two 18650 batteries in the case attached to my zBitX works well too and that is what it is set up for. No chance of over volting it. In general a fun new radio that does a lot of things and is made for try this, try that without breaking the budget. Dave K8WPE toggle quoted message Show quoted text On May 21, 2025, at 8:32?PM, Gordon Gibby KX4Z via groups.io <docvacuumtubes@...> wrote: ?Rafael, I would take a 12 V laptop power supply from a thrift store, and then add a bunch of series 5 or 10 amp silicon diodes until you get the voltage down to about 8 V. Six diodes in series should do the trick You can probably get the laptop power supply rated for 3 A or so for five or $10 at the thrift store and you can get the diets for less than $10 from Amazon. So you’ll have about $20 into the project. I hope that helps! Be careful with polarity! Gordon kx4z On May 21, 2025, at 19:08, Rafael Diniz via groups.io <rafael@...> wrote: ?Could anyone recommend an affordable power supply I can use with the zBitx, to use with 110 or 220 VAC, 50Hz and 60Hz? Cheers, Rafael <OpenPGP_signature.asc>
Gordon Gibby KX4Z All Messages By This Member #118370 Thanks Dave -- the only concern I have about these switching power supplies (I bought a few but haven't used them yet) is generation of radio frequency interference.? ?The noise level of the zBitx may already be internally so high that it doesn't matter, but I have fairly sensitive radios such as 7300 etc. (and I have added shielding internally to my sbitx's?to improve their receiver performance) -- and I HATE any noise generation in my house, where I run two Winlink RMS stations.? ?Any data on noise generation by the DROK's?? ?Filtering possibilities to deal with any?? ? The best data would be measuring the sensitivity or minimum discernible?signal in a calibrated way before and after adding the DROK to power.? ?? Thanks! Gordon KX4Z toggle quoted message Show quoted text On Thu, May 22, 2025 at 7:03?AM David Wilcox K8WPE via <Djwilcox01=[email protected]> wrote: Instead of all the diodes get a Drok voltage/current controller from Amazon or other places. I can then use the battery packs from my yard power tools and reduce them down to whatever voltage I need for the project at hand.? ?I mostly use one with my 12 volt BioEnno 12 volt battery packs.? The two 18650 batteries in the case attached to my zBitX works well too and that is what it is set up for.? No chance of over volting it. In general a fun new radio that does a lot of things and is made for try this, try that without breaking the budget. Dave K8WPE > On May 21, 2025, at 8:32?PM, Gordon Gibby KX4Z via <docvacuumtubes=[email protected]> wrote: > > ?Rafael, I would take a 12 V laptop power supply from a thrift store, and then add a bunch of series 5 or 10 amp silicon diodes until you get the voltage down to about 8 V.? Six diodes in series should do the trick > > You can probably get the laptop power supply rated for 3 A or so for five or $10 at the thrift store and you can get the diets for less than $10 from Amazon. So you’ll have about $20 into the project. > > I hope that helps!? Be careful with polarity! > > > Gordon kx4z >> On May 21, 2025, at 19:08, Rafael Diniz via <rafael=[email protected]> wrote: >> >> ?Could anyone recommend an affordable power supply I can use with the zBitx, to use with 110 or 220 VAC, 50Hz and 60Hz? >> >> Cheers, >> Rafael >> >> >> >> >> >> >> <OpenPGP_signature.asc> > > > > >
Jody - K3JZD All Messages By This Member #118384 I will second the idea of using a Drok Power Supply.? I bought a 10 amp 12vdc adjustable Drok wire frame supply from Amazon.? ?I run it at 7.5v - about the same as the two batteries would provide,? ?It seems to be very clean ad holds the voltage very steady. ? I had tried a 9vdc 5a brick power supply that was made for a computer. While it did not have any RFI that could detect, the zBITX ran pretty hot with a 9v supply, and the voltage dropped quite a bit whenever I transmitted.? It seemed like 5a wasn't quite? enough. ? And, I also found out that the JESSPOW 18650 Flat Top 3300mAh Li-ion Batteries that Amazon sells are good quality.? ? 72, Jody - K3JZD? ?
Gordon Gibby KX4Z All Messages By This Member #118385 开云体育 Great! toggle quoted message Show quoted text On May 22, 2025, at 13:12, Jody - K3JZD via groups.io <k3jzd.jody@...> wrote: ? I will second the idea of using a Drok Power Supply.? I bought a 10 amp 12vdc adjustable Drok wire frame supply from Amazon.? ?I run it at 7.5v - about the same as the two batteries would provide,? ?It seems to be very clean ad holds the voltage very steady. ? I had tried a 9vdc 5a brick power supply that was made for a computer. While it did not have any RFI that could detect, the zBITX ran pretty hot with a 9v supply, and the voltage dropped quite a bit whenever I transmitted.? It seemed like 5a wasn't quite? enough. ? And, I also found out that the JESSPOW 18650 Flat Top 3300mAh Li-ion Batteries that Amazon sells are good quality.? ? 72, Jody - K3JZD? ?

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