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.
Totally agree — the BQ25570 isn’t a full Li-Ion charger. It can reach 4.2V, but doesn’t handle proper CC/CV charging or termination. If you’re using it with Li-Ion, you really need a protection IC or dedicated charger in the path. 3.6V is near empty, not a safe charge level.
For high-frequency signals like this, consider using RF reed relays or high-speed analog switches (e.g., DG411). Also, keep signal paths short, use proper shielding and grounding, and match impedance to avoid reflections. Active probes and buffer amps can also help preserve signal integrity.
Yeah, you’re spot on - without smoothing caps after the rectifier, the board’s getting nasty ripple, not real DC. Most of these boards need stable DC to fire properly, especially for short high-current bursts. That ripple alone can kill the weld power. Paralleling 10–20 capacitors sounds like...
Most electronic products like KZ brand headphones go through a combination of batch testing and random quality control (QC) checks during manufacturing. That means not every single unit is tested individually. Instead, a sample from each production batch is inspected for sound quality...
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