TL082 Gobal chips

Posted on Feb 6, 2014

This circuit provides either latched switching or timed switching. U1A and U1B provide audio ampliftcation from the microphone, U2 is a retriggerable monostable multivibrator. S1A and S1B select either U3, a flip flop, or U2. R13 and R14 allow a 6  to 60-second timer delay after the sound ceases, in the timed mode ‚BR1, U5, and associated components

TL082 Gobal chips
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form a power supply. Q1 drives optocoupler U4 andtriggers triac TR1. These devices are low cost, high speed, dual JFET input operational amplifiers with an internally trimmed input offset voltage (BI-FET II ™ technology). They require low supply current yet maintain a large gain bandwidth product and fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents. The TL082 is pin compatible with the standard LM1558 allowing designers to immediately upgrade the overall performance of existing LM1558 and most LM358 designs. These amplifiers may be used in applications such as high speed integrators, fast D/A converters, sample and hold circuits and many other circuits requiring low input offset voltage, low input bias current, high input impedance, high slew rate and wide bandwidth. The devices also exhibit low noise and offset voltage drift. Reliability MetricsPart NumberProcessEFR RejectEFR Sample SizePPMLTA RejectsLTA Device HoursFITSMTTF (Hours)TL082CMBIFET012335009750004276658912TL082CMXBIFET012335009750004276658912TL082CPBIFET012335009750004276658912Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0. 7eV activation energy and derating the assumed stress temperature of 150 °C to an application...

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