Making a power supply with your own hands makes sense not only for enthusiastic radio amateurs. A homemade power supply unit (PSU) will create convenience and save a considerable amount in the following cases: For...
The ULN2003 (ULN2003a) chip is essentially a set of powerful composite switches for use in inductive load circuits. Can be used to control large loads...
Lesson summary on the topic “Information storage.” Subject: computer science. Class: 5. Lesson type: combined. Planned educational results: subject - general ideas about...
The ASUS laptop allows you to roll back all settings to their original state, but only under certain conditions. In this article we will talk about restoring factory settings. Reset...
Beginners who are trying to independently assemble some electronic circuits and devices are faced with the very first question in their new activity: how to read electrical circuits? Question on...
In this case, to transmit a stereo signal, no encoding or decoding is carried out; transmission is carried out on two spaced frequency channels, each for its own stereo channel, with...
Inexpensive and compact lithium battery memory cards based on the TP4056 microcircuit, as well as individual microcircuits, have appeared for sale in online stores. For those who find it difficult to do something similar, but...
Modern digital audio sources (CD players, DACs, etc.) have a very low noise level. Much lower than vinyl or magnetic tape. Due to this noise requirement of the subsequent...
My favorite mobile phone NOKIA 6500, which was purchased about six months ago, initially did not charge. Repair work was carried out, after which the phone worked for about a month. Main...
Anyone can assemble such a device, even those who are completely far from electronics, you just need to solder all the parts as in the diagram. The metal detector consists of two microcircuits. They don't require any...