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.
1,667 total views
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.
1,232 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.
1,336 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;
1,432 total views
