Reading time: 4 minute Among the main topics presented in this issue, we list: Schmitt tipping circuit; Design of a Hi-Fi audio amplifier; Calibration of RLC measuring bridges; Automatic position holding system; Time relay with coupling delay; Bread oven automation equipment; Bread oven automation equipment; How do we build a 50g mule ?; Digital capacitance meter;
Reading time: 2 minute Among the main topics discussed in this issue are: 25W audio amplifier; Dynamic limiter for perfect fidelity; Diode, thyristor and triac tester; RGA automatic manipulator; Agreement with Zener diodes; Acoustic enclosures with transmission line; Frequency doubler;
Reading time: <1 minut This memorandum provides those interested with a synthesis of theoretical and practical data, useful in the activity of design, execution and testing of radio equipment.
Reading time: 3 minute The materials presented in this paper represent, perhaps, the most complete design guide for acoustic enclosures published so far in our country (until 1985), including a large amount of data and calculation formulas for all components of an enclosure.