NTE1635

NTE1635 Integrated Circuit Speaker Protector/Voltage/Temperature/Overload Description: The NTE1635 is a monolithic integrated circuit in an 8–Lead SIP type package designed for use in protecting power amplifiers and speakers in various amplifier and receiver applications. Features: D Built–In Relay Driver D Single Power Source D Wide Operating Supply Range: 25V to 60V D Plus and Minus Voltage using One Pin (Both Pin3 and Pin4 Posses the Same Functions and Detect Plus and Minus Voltage) D AC Voltage Detector (Pin5) D Circuit Protection by Plus Voltage Detection is Provided by Connecting D1 Diode Externally (Pin6) D Relay–On Lag Time Adjustable by External Applications D Short Relay–Off Time (25ms Typ Under the Standard External Applications) Typical Applications: D For Speaker Protection, use Pin3 (or Pin4) to Detect Setoff of Quiescent Output DC Voltage and to Turn the Relay Off D For Power Amplifier Protection, use Pin3 (or Pin4) with an External Thermo–Sensitive Device to Detect the Temperature Increase and to Turn the Relay Off D Power Amplifier can be Protected by Detecting Overload and Turning the Relay Off with Pin6 D In case of Overload Detection by Constant–Current or by Constant–Voltage Drive using an External Diode D1, the Latch Mechanism keeps the Relay On until the Power is Switched Off D For Prevention of Pop Noise at Power Off use Pin5. AC Voltage Disappeance is Immediately Detected when the Amp’s Switch has been Off. This Minimizes the Relay–Off Time and thus c...