Various electronic magazines, in digital format (.pdf), with free download.
Reading time: 9 minute Among the main topics presented in this issue, we list: Linear voltage regulators; Low cost charger for NiCd and NiMH elements; Keyboard with conversion from decimal to BCD; Vu-meter with transistors; Switch-detector for minimum load supplied in alternating current; FM transmitter microphone - for the band 88-108 MHz with a single transistor; Using an LED as a photodiode (light detector); 1W audio amplifier with TDA7052.
3,242 total hits, 1 hits today
Reading time: 6 minute Among the main topics presented in this issue, we list: Proximity sensor (proximity); TC9153 (AP) - Digital volume controller, up-down; Folia Press'n'Pell (PnP) - Practical advice; Digital stereo volume controller with electronic up / down control; Speed variator for mini-drills; Voice separator for karaoke; Prescaler 1000MHz.
2,129 total hits, 2 hits today
Reading time: 6 minute Among the main topics presented in this issue, we list: Indicator - universal controller for liquid level; Remote control receiver for switching electrical and household appliances; Motion control in both directions at a DC minimotor; Temperature measurement and recording on PC - using the iButton DS1820; Volumetric sensor (or broken glass detector); 2 x 3W stereo audio amplifier; Voltage stabilizer 1.25… 20V / 4A.
1,729 total hits, 2 hits today
Reading time: 5 minute Among the main topics presented in this issue, we list: Measuring the electrical resistance of solders made with alloys without Pb or conductive adhesives; Performance indicator for "burned" fuses; Active switch for supply voltages; LM385 (B) - Precision fixed voltage reference source; Charger for lead-acid batteries (sealed); Balance indicator; Automatic / manual video switch; Speed regulator for AC motors; Sensory electronic switch - Touch Switch.
1,568 total hits, 1 hits today
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.
1,665 total hits, 2 hits today
Reading time: 6 minute Among the main topics presented in this issue, we list: Alternative technologies for connecting electronic components (II); Simple and economical bargraph; ICL7665 - Electric voltage monitor with dual output for under and over-voltage; Stepper motors - Structure and control; Stepper motor driver with MOSFET transistors; Simple protection for acoustic enclosures; Compact Flash / IDE interface; Automatic night lighting powered by the mains.
1,231 total views
Reading time: 4 minute Among the main topics presented in this issue, we list: Alternative technologies for connecting electronic components; Very low voltage stabilizer (LDO) 1.2V; FM 100 - 108MHz mini transmitter (modulator); 2x30W stereo amplifier; Source of constant current, power; Determinator 4001 - Identifier / tester for transistors; Universal temperature sensor with LM335.
1,327 total views
Reading time: 5 minute Among the main topics presented in this issue, we list: MC34064 - Undervoltage sensing circuit (power voltage monitor); Audio frequency amplifiers with TDA2822M; Universal siren module with back-up source; Dynamic lights and signaling arrow; 4-channel digital thermometer; "Flash" type light signals (beacons); Maintaining between two limits the water level in a tank;
1,427 total views
Reading time: 5 minute Among the main topics presented in this issue, we list: Battery monitors; MC1496 integrated circuit; 2-zone alarm and / or fire alarm control panel; Voltage inverter - 24Vdc / 220Vac, 50 / 60Hz, 350W; Electronic timer with "start" and "stop" commands; Preamplifier - input trainer for frequency meters; Top 209/210 - TOPSwitch Family - Electronic MOS-FET switch with PWM control.
1,605 total views
Reading time: 4 minute Among the main topics presented in this issue, we list: Measuring temperature performance by non-contact methods; Switching voltage source 1.25… 35V / 3A; Digital thermostat with 3 1/2 digit display; Analyzer for batteries; Antenna impedance meter;
1,070 total hits, 1 hits today
