Purpose and power - This operational amplifier tester evaluates the quality of operational amplifiers and is powered within a 5.5 V to 28 V range. How to use - To test an item, place it in the test area and press the start button; the tester will begin operation. - Connect power by plugging the power plug into a power outlet. The tester will emit a short beep, the indicator light will flash for about 3 seconds, and then testing starts. Chip testing - If you want to test chip components, insert the chip into the test socket using tweezers. Key specifications - Operating voltage: 5.5 V to 28 V. Applications and benefits - Useful in electronics development or repair to quickly assess op-amp performance in circuits such as audio amplifiers, sensor interfaces, and control systems. - Enables rapid quality checks during component selection or replacement to ensure op-amp performance before soldering. - Handy for field service to verify op-amp functionality on-site before proceeding with further work.