MP Elettronica Blog

Phase shift (or solid-state) control for electromagnetic feeder

The phase control is a system for varying voltage value and consequently  the vibration amplitude of an electromagnetic feeder. 

This operation’s crucial component is the TRIAC (electronic switch), which is used in order to control electromagnetic vibratory feeders in a variety of applications. The operating principle of a phase angle control requires that the conduction of any angle α for TRIAC ignition must be present both in the positive and negative half-waves of one line voltage 115V or 230V – AC control for 6000 Vib per minute or 100Hz -The conduction angle α of ignition of the TRIAC must be present only in one half-wave to regulate vibrators at 3000 Vib per minute or 50Hz.

The power section, represented by the TRIAC, is controlled by a control section that includes electronics for generating the synchronism signal. The control, synchronized with the network, adjusts the conduction angle of TRIAC by determining the voltage value on the load.