All micrometers have a constant-force mechanism, so that once the spindle contacts the surface of the measured object, it will stop tightening. This ensures repeatable measurements and prevents over-tightening.
Mitutoyo Micrometer 103-220 with Ratchet-Stop Thimble
Ratchet-stop thimbles have a speeder knob to reduce the time it takes to open and close the micrometer. When the spindle stops tightening, the thimble stops turning, but the speeder knob will continue turning with a clicking sound.
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- Vendor: Chitra Mall
B-8, Navana Zohura Tower, Bangla Motors, Dhaka
- 5.00 rating from 4 reviews
TL081 Wide Bandwidth JFET
Input Operational Amplifier
The TL081 is a low cost high speed JFET input operational
amplifier with an internally trimmed input offset voltage
(BI-FET IITM technology). The device requires a low supply
current and yet maintains a large gain bandwidth product
and a fast slew rate. In addition, well matched high voltage
JFET input devices provide very low input bias and offset
currents. The TL081 is pin compatible with the standard
LM741 and uses the same offset voltage adjustment circuitry.
This feature allows designers to immediately upgrade the
overall performance of existing LM741 designs.
The TL081 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 has low noise and offset
voltage drift, but for applications where these requirements
are critical, the LF356 is recommended. If maximum supply
current is important, however, the TL081C is the better