Regulated bench PSU

[Synapse]

Milo, these MC1466/MC1566 look to me like an easy solution.. too bad they are disc. Would you by any chance know a replacement? and could you send me the datasheet for the MC1466/MC1566 ? thank you

 

[UrSv]

Re: Re power supply

Dear UrSv,

if you are still looking for a power supply with current limit, let me say that the best IC ever made, in my opinion, was MC1466/MC1566 Motorola. It is an old IC and I think could be possible to find even to-day. Since it needs a separate supply (25V few mA), you can control voltages from 0 to how much the series transistors can sustain and with current as you want. You can design supplies, for instance, for 0-15 V-10A or 0-40V-5A or 0-250V-250mA or as your need. It exhibits excellent line voltage, load voltage and current regulation. One of the most important points, for me, is the current limit knee: it is very sharp. If you use 723, when you reach the current limit, the voltage goes down strongly. This doesn't happen with MC1466/1566. If you are unable to find its data-sheet, let me know. I'll send it to you.

Milo

Thanks, I will look into those as well. I have started a design using OPA445s...

 

[Milo]

Re MC1466/1566

Hi Synapse,

I will scan the data sheet from Motorola Linear Data Book and send it to you as soon as possible. Unfortunately there is no replacement for it. I never heard about any replacement from any other manufacturer.

Cheers

Milo

 

[Milo]

MC1466/1566

Hi all, I apologize for the delay, but now I am ready to send the complete datasheet in zip format to those who are asking for it. It has about 1.1 MB and it is not allowed to send it through this forum. So, those who want to receive it, are asked to give me their email address and I'll send it quickly.

Best regards

Milo

 

[jackinnj]

ham radio ops used to wax poetic about the MC1466 -- sadly the chip is only available from those who stock obsoletes.

if you can find it, however, you might wish to consider implementing a design based on the carcase of the Heath IP-27 Power Supply -- this has a separate transformer winding for biasing the current control transistors. IP27's go for $10 to $25 on EBay.

I have an IP-27 which is "kind of" in the process of modification for a dual tracking supply -- right now I use a Lambda +/- 15V supply -- for the newer low voltage chips I have had to outboard a linear regulator scheme for +/- 5V.