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DIY For Audio
My homebrew relay based attenuator - proof of principle
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<blockquote data-quote="JimGore" data-source="post: 522677" data-attributes="member: 3"><p>^^ Thanks Gents - it's nothing really. All you need is some time and a willingness to tinker (and blow up the odd components here and there)...</p><p></p><p>I did some quick homework and also checked the Mantech site. There are some savings to be had - not huge, but not insignificant either...</p><p></p><p>1. A shift register and a driver together cost R 57.50; there are 3 sets of these in the design. This can be replaced by a single IC which contains both in one package. Cost around R 39 each. That gives a saving of R 55.50</p><p></p><p>2. Mantech has those screw terminal PCB connectors in stock for around R 3.00 each. That gives an additional saving of about R 39.00</p><p></p><p>Total saving of around R 94.55 per board. I am happy to implement these changes because I don't feel it will detract from the quality of the finished product.</p><p></p><p>Cheers,</p><p>Ian.</p></blockquote><p></p>
[QUOTE="JimGore, post: 522677, member: 3"] ^^ Thanks Gents - it's nothing really. All you need is some time and a willingness to tinker (and blow up the odd components here and there)... I did some quick homework and also checked the Mantech site. There are some savings to be had - not huge, but not insignificant either... 1. A shift register and a driver together cost R 57.50; there are 3 sets of these in the design. This can be replaced by a single IC which contains both in one package. Cost around R 39 each. That gives a saving of R 55.50 2. Mantech has those screw terminal PCB connectors in stock for around R 3.00 each. That gives an additional saving of about R 39.00 Total saving of around R 94.55 per board. I am happy to implement these changes because I don't feel it will detract from the quality of the finished product. Cheers, Ian. [/QUOTE]
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DIY & Tutorials
DIY For Audio
My homebrew relay based attenuator - proof of principle
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