Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Hey guys. I inherited this wonderful little HP 456A current clamp a while back and I have been trying to find batteries for it with no avail. I have looked at the manual which states that it requires TWO TR 233, and ONE TR 234 Mallory mercury (stable discharge voltage) batteries. the...
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