Analytical Electronics Services Pvt Ltd

Picotest J2120A Features

• 10Hz-10MHz usable bandwidth
• Low loss design
• 5 Amps maximum current
• 50VDC max input
• Easily measure input filters and PSRR

Introduction

While the injection transformer is a very wideband adapter, it is not useful for measuring ripple rejection (PSRR) of a power supply or even an opamp. This is because the attributes that make the injection transformer perform so well also result in a transformer that is intolerant of DC current. Even very small DC currents (5mA or less) can greatly reduce the signal capacity or even totally saturate the transformer. For this reason, the Picotest line injector (J2120A) is another essential test adapter. Note the J2102B common mode transformer is usually needed to address ground loop issues.

Specification