Readers: If you want to build the module featured in this post, please go to PCBWAY's Community pages--a gerber ready to download and fabricate is here.
Also please visit PCBWAY's site using the link here--it will help this blog. Thanks.
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Hello again! Finishing up ARP 2600 voltage processor clones and workalike modules, this might be the last of the series, which is not a bad thing?
The ARP2600's unique voltage processor has a click- and pop-free clock-driven analog electronic switch for AC and DC signals.
You can find the original design on page 29 of the ARP 2600 service manual here.
The 70's era subcircuit used discrete components for its toggle flip-flop and employed LS4392 FETS for heavy lifting.
Best of all: a working Electronic switch completes my ARP2600 voltage processor series. Are we home yet?
I decided to use a DG401 IC instead of the FETS--post where I initially experimented with that IC is here with more here.
In short: The DG401 works great--think of a rail to rail version of the venerable 4051 analog CMOS switch; both are useful chips for a lot of what we do.
I laid out PCB's for the workalike and sent them to the blog's patient sponsor, PCBWAY, to create a 5HP Euro prototype.
Let's see if what I designed works....
Happiness is new PCB's from PCBWAY.... |
The build uses about 2/3rd's SMD components, many of which I don't have in the junk box. I bought the parts from Digikey and posted the BOM on the PCBWAY community page (here). |
Unpopulated main board--I am getting more comfortable with1206 SMD components--large enough that I don't need a microscope for a lot of the work. |
Front panel.... |
Testing.... |
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