Reading time: 5 minute Among the main topics presented in this issue, we list: Configuring an adequate temperature profile for gluing surface-mounted components (SMD); Generation of laboratory sinusoidal signals by direct digital synthesis - DDS. Circuit AD9851; Digital tachometer; Electronic ringtone for LS1240A integrated circuit telephone; ZCD - pulse generator synchronized with the voltage crossing of 220Vac / 50Hz through zero;
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 Among the main topics presented, we list: AD 820 (Single-Supply, Rail-to-Rail, Low Power, FET Input Op Amp); TPA 731 (700-mW, mono, analog input Class-AB audio amplifier with differential inputs); 1000MHz frequency meter; Fast charger for Ni-Cd, Ni-MH batteries; Programs for calculating the impedances of interconnection routes; TDA1072A (AM receiver circuit); Electronic cipher; Transceiver 50MHz / 28MHz.
Reading time: 3 minute The project is useful for electronics enthusiasts passionate about radio frequency and more. It can measure capacities with fairly good accuracy, between 1pF and 100nF using an RS232 serial interface. The measured value is displayed on the PC or laptop display.
