Reading time: 2 minute The installation presented is a simplistic one, its purpose being light detection and familiarization with the operation of operational amplifiers. The electronic circuit is based on the TL071 / LM741 IC and uses a 5V differential supply.
Reading time: 4 minute Among the main topics presented in this issue, we list: Mini-timer with bargraph; Night light with white LEDs and variable brightness; Capacity indicator for Li-Ion batteries; Tester for operational amplifiers; Telephone alarm; Parallel connected telephones - restrictions and confidentiality of calls; PIC16F84 microcontroller (I) - use and programming.
Reading time: 4 minute Among the main topics presented in this issue, we list: Laser telemetry; Timed miniature fuses - FSK0_ Series; Universal electronic voltmeter with LCD display; 18 holiday schemes and applications; Cable capacitance; Adapter for measuring alternating voltages.
Reading time: 4 minute Among the main topics presented in this issue, we list: Techniques and methods for measuring earthing installations; Temperature transducers (I) - Resistive transducers (thermistors); TDA5051 - Modem through the 220Vac socket network; Universal mobile phone interface - PC with MAX3232; Counter / Dispenser for pill packaging; Voice encryption module;
Reading time: 4 minute Among the main topics presented in this issue, we list: Introduction to digital potentiometers; AD7376 +30 V / +/- 15 V Operation - 128-Position Digital Potentiometer; Automatic lighting (with IR barrier); TV modulator - for surveillance video cameras; IC-Prog serial programmer - for uC PIC and 24Cxx memories; Voice activated electronic switch.
Reading time: 7 minute Among the main topics presented, we list: Remote control by phone; Methods and techniques for measuring conductive structures (II); Prescaler for multimeter - 20MHz; Time relay - Frequency generator with microcontroller 89C2051; Telephone line detector; Automatically programmable time; Resetable fast electronic safety.
Reading time: 4 minute Among the main topics presented in this issue, we list: TPS6021X (Regulated 3.3-V 50-mA Low-Ripple Charge Pump with Ultra Low Operating Current); AD698 (Universal LVDT Signal Conditioner); Wireless microphone; PIC, EEPROM and SIM card programmer; TV modulator; Remote control via electrical network; Measurements with the reflectometer.
Reading time: 4 minute The main topics discussed in this issue: Advocacy for education; Help in case of insomnia (electronic assembly); Rain alarm (electronic assembly); About connectors; Digital photography; Digital photography money;
Reading time: 3 minute Among the main topics presented in this issue, we list: LT1571 - Controller for charging batteries; LMX1311 - Transceiver for GSM terminals; LM4808 - 105mW amplifier for media equipment; Schottky diode; F9FT antenna; MC 2833P; Speed controller for DC motors;
Reading time: 3 minute Among the topics discussed in this issue, we list: Let's build a wind rotor; Intercom; Economic refrigerator; Speed variator for DC motors; Radio beacon; Adjustable voltage source 0V - 27V; Making coils with ferrite type magnetic core; Temperature relay for vulcanizing and hot soldering apparatus with epoxy resins;
