HP 350 - 500B For 7868A Preamp 6AQ5/12AX7/0G3 Regulated Tube Power Supply
Item History & Price
| Reference Number: Avaluer:64656997 | Model: 350-500B |
| Brand: Hewlett Packard |
* Look at Pictures Before Bidding! *
* Ship Worldwide *
For this sale is a Hewlett Packard 350-500B tube regulated power supply. At first I could not find any info on this unit but thanks to a helpful eBay member that I found out this was the power supply for the HP 7868A eight channel ink recording system from 1967. PDF info can be downloaded here:
https://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1967-07.pdf
The power transformer is marked "H.P." and the tube is a Hewlett ...Packard branded 6AQ5 tube. The other tube is 0G3 and there's a missing 9-pin tube, possibly a 12AX7? Sell for parts only. Good for restoration or DIY tube mic or line preamp project. Transformer windings continuity checked okay with an ohmmeter. Not tested. Selling AS-IS. What you see is what you will get.
* Ship Worldwide *
For this sale is a Hewlett Packard 350-500B tube regulated power supply. At first I could not find any info on this unit but thanks to a helpful eBay member that I found out this was the power supply for the HP 7868A eight channel ink recording system from 1967. PDF info can be downloaded here:
https://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1967-07.pdf
The power transformer is marked "H.P." and the tube is a Hewlett ...Packard branded 6AQ5 tube. The other tube is 0G3 and there's a missing 9-pin tube, possibly a 12AX7? Sell for parts only. Good for restoration or DIY tube mic or line preamp project. Transformer windings continuity checked okay with an ohmmeter. Not tested. Selling AS-IS. What you see is what you will get.
