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Metal powder sensor on the laser printer

Metal powder can be collected from the sensor on the printer. Only need to replace the reel and add display unit and a power source. Driving one of the sensors (TS0505ANA TDK-79S A1842455) shown in Figure. 1. He assembled a CMOS chip, similar in functions and pinout… Continue Reading

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DRL control unit with the function of the turn signal

After making changes in the SDA, concerning the requirements for the use of daytime running lights, This issue was raised and in the pages of our magazine, including in the article by the same author "Control Automatic daytime running lights" ("Radio", 2012, №1, with. 45). but time… Continue Reading

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Power LED lamp "K48 era" of the Li-lon battery

For autonomous power various electronic devices often use chemical current sources, For example, galvanic cells and batteries composed of them. Given the relatively high cost “бата­реек”, they should be used only in cases, if the device consumes very little current (For example, clock with LCD display)… Continue Reading