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.
Hi,
I have a W-King D8 Bluetooth boom box which I'd like to modify with some external speaker output jacks and some buttons to switch the internal speakers on and off.
From factory the specs of the boom box are:
-Power Input: DC 5V
-Speaker Output Power: 2 x 25W ( confirmed by Youtube channel...
I'm trying to make a simple IR circuit that energizes a coil when the detector "sees" the beam (refer to attached schematic). The problem is when the everything is active, I have almost no current at the coil. Why am I losing so much current? I suspect it's because the base of the NPN transistor...
I'm trying to make a magnetic pendulum circuit for a holiday decoration, and I need some help. I found this circuit online (see attached JPG), but the circuit behavior is not consistent and it rarely works correctly. Most of the time, the coil is ALWAYS on (rather than momentarily on when the...
I have a sharp ht cn400d home theatre, and that i lately noticed a high fuzzy noise(the noise that a radio makes when not connected to a antenna) comes from inside it(mainboard), and the same noise comes from the 5 audio output channels too. The home theatre does not play any music other than...
Hi All,
First time post here. Hope you're all having a good weekend.
I'm doing a little project with a small clapper solenoid. It's one of the 5.5lb 12VDC, .25A 20mmDia. units sold on ebay. (ZYE1 P20/15). Though I don't have this one yet, so can give you the coil resistance, I'm working with one...
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