Free Electronic Circuits & 8085 projects

Electronic projects with circuit diagram and 8085 microprocessor projects.

Electric building door control circuit

Published on Apr 25 2011 // Electronic Control Circuits

Electric  building door control circuit

Figure is the simulation of electrical equipment sound caution circuit. It consists of electronic switch-temperature, controlled multi-harmonic oscillator, analog voice circuits, audio amplifier circuit and AC step-down rectifier circuit. 555 and R2, R3, Cl and other components of a controlled multi-vibrator, and its multi-harmonic oscillation frequency:
icon parameter oscillation period To (\u003d 1/fo) for the 10s.