CA3059

Order this document by CA3059/D CA3059 Zero Voltage Switch This series is designed for thyristor control in a variety of AC power switching applications for AC input voltages of 24 V, 120 V, 208/230 V, and 277 V @ 50/60 Hz. Applications: Relay Control Valve Control On–Off Motor Switching ZERO VOLTAGE SWITCH SEMICONDUCTOR TECHNICAL DATA Heater Control Lamp Control Differential Comparator with Self–Contained Power Supply for Industrial Applications Synchronous Switching of Flashing Lights 14 1 Figure 1. Representative Block Diagram 2 VCC PLASTIC PACKAGE CASE 646 ORDERING INFORMATION Device CA3059 Operating Temperature Range TA = – 40° to +85°C Package Plastic DIP RS 5 AC Input Limiter Power Supply VCC Current Boost RL 3 12 AC Input Voltage 100 µF + 15 – V DC Mode or 400 Hz Input RP 14 Protection Circuit Zero Crossing Detector MT2 FUNCTIONAL BLOCK DESCRIPTION 1. Limiter–Power Supply — Allows operation of the CA3059 directly from an AC line. Suggested dropping resistor (RS) values are given in the table below. 2. Differential On/Off Sensing Amplifier — Tests for condition of external sensors or input command signals. Proportional control capability or hysteresis may be implemented using this block. 3. Zero–Crossing Detector — Synchronizes the output pulses to the zero voltage point of the AC cycle. This synchronization eliminates RFI when used with resistive loads. 4. Triac Drive — Supplies high–current pulses to the external power controlling thyr...