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Injectors transformers

Injectors transformers Picotest has introduced a new line of Signal Injectors that enable “hi-resolution” voltage regulator and power supply measurements. Our line of Signal Injectors is the most versatile and sophisticated set of test adapters ever developed. They are an essential part of getting the most out of your network and impedance analyzers whether you are measuring power supplies, regulators, other linear circuitry or components. Order your injectors now!


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Ultra Low Noise Preamp

Ultra Low Noise Preamp The J2180A low noise preamplifier provides a fixed, AC coupled 20dB gain while converting a 1 MOhm input impedance to a 50 Ohm output impedance. With a 3dB bandwidth of 0.1Hz to 100MHz, the preamplifier improves the sensitivity of oscilloscopes, network analyzers and spectrum analyzers while reducing the effective noise floor and spurious response. The preamplifier can also serve as a low frequency DC blocker for a spectrum analyzer or you can use it to connect a high input impedance oscilloscope probe to 50 Ohm equipment. The J2180A preamplifier offers very low noise, fast 100V/uS slew rate for pulse applications and very low distortion for audio applications. A typical noise plot shows the noise is 2.4nV/rt_Hz. (See below) KEY FEATURES: •Works with all oscilloscopes, spectrum analyzers and network analyzers •Active DC bias loop maintains low DC output voltage •High input impedance compatible with typical probes minimizes circuit loading •Low noise •Works with near field probes for EMI troubleshooting •Improves effective noise floor and spurious response •Very wide bandwidth •Compatible with J2170A power supply


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Low Pass / High Pass Noise Filter

Low Pass / High Pass Noise Filter The J2190A active filter presents a high impedance (approximately 150kOhms) minimizing the loading of the circuit being tested. The output impedance is 50 Ohms allowing low noise coaxial connections to all typical test equipment. The 0.1Hz-10Hz noise band is common for opamp measurements, voltage regulators and voltage references. Many application notes offer schematics of such a filter for test purposes. An engineer’s time is much too valuable to be spent building test equipment. We have created a 4th order high pass and 4th order low pass filter with an optimally flat response and 0dB gain. Additional filters can be cascaded for even sharper cutoff. KEY FEATURES: •0.1Hz-10Hz •4th Order Filter •Low Pass and Cascadable •Very low noise •Powered from a J2170A (included)


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