Automatic Broadcast Controller Circuit Composed Of 555

Published:2011/6/23 8:51:00 Author:Robert | Keyword: Automatic, Broadcast, Controller | From:SeekIC

The picture shows the automatic broadcast controller circuit composed of 555. This controller is made up of buck rectifier circuit, delay circuit, relay control circuit and so on. The F point in the picture is connected to the high-voltage indicator transformer's secondary stage's non-grounded port which is AC 6.3V. The signals of G point in the picture is from the self-monitoring signal transformer. This controller can control the electron tube loudspeaker. It would broadcast automatically according to the operating program which is booting (warm-up 2 to 5 minutes)→openning the high-voltage (the lower limit of broadcast time)→closing high-voltage (3 seconds)→closing low-voltage. If the loudspeaker is broken, it can shut down automatically after 10 seconds.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/555_Circuit/Automatic_Broadcast_Controller_Circuit_Composed_Of_555.html

Print this Page | Comments | Reading(3)