Best Current Sense Amplifiers
1 Uxcell a14051500ux0151 General Propose 2N3906 TO-92 Package PNP Transistor, 40V, 200 mA, 100 Piece
To-92 package, easy to weld on the PCB board.
Reviews
Find Best Price at Amazon"A random spot check of 10 transistors from the batch exceeded hfe, leakage, breakdown, and ft specifications."
"I used 40 of these as soon as I received them, and every one of them worked great!"
To-126 package, easy to weld on the PCB board.
Reviews
Find Best Price at Amazon"Just as I expected."
"Ordered TDA2030A and received YD2030 amps just tossed in to a clear baggie."
"I replaced the chip a second time with an actual TDA2030 and all is good."
"Chinese fake (yd2030) ."
Mmbt3904 2N3904 sot-23 SMD general purpose amplifier NPN transistor 1AM 40V 0.
Reviews
Find Best Price at Amazon"great replacements and good for projects."
Best Differential Amplifiers
To get you started, we have example code for both the Raspberry Pi (in our Adafruit Pi Python library) and Arduino (in our ADS1X15 Arduino library repository) Simply connect GND to ground, VDD to your logic power supply, and SCL/SDA to your microcontroller's I2C port and run the example code to start reading data.
Reviews
Find Best Price at Amazon"Works well with both Arduino and Raspberry Pi."
"Pefect for current shunts and other low output sensors."
"That said everything hooked up to my Raspberry Pi B+ I2C buss extremely easily and the well done example code is a breeze to get the ADS1115 running in single-ended and differential modes with very little effort."
"Easy to use with publicly available libraries and example code."
"The chip requires more code to support operation ... a lot more. An external power supply is a good thing: a DROC regulated voltage module (available thru Amazon) lives up to its claims, is easily powered with an older e.g. 18V laptop power supply, and thereby improves on reading precision."
"High resolution via programmable settings."
Best Comparator Amplifiers
The Ne5532 is a high-performance operational amplifiers combining excellent DC and AC characteristics.
Reviews
Find Best Price at Amazon"I needed these old op-amp for an old piece of equipment and it got here fast from China."
"good price and performance are ggod."
"exactly as advertised and came in a static free tube."
"Product arrived early and functioned as expected."
Best Instrumentation Amplifiers
These devices consist of two independent, high-gain frequency-compensated operational amplifiers designed to operate from a single supply over a wide range of voltages.
Reviews
Find Best Price at Amazon""They are real and they are spectacular"."
"They work good per the datasheet."
"This awesome chip has many uses and is inexpensive."
Best Isolation Amplifiers
Best Logarithmic Amplifiers
Specifications: The operating frequency: 1-8000MHz. Dynamic Range: -65dBm to + 5dBm. The detection slope: -25 mV / dB (Typical values). The detection output voltage range: 0.5--2.1V. Power supply voltage: 7-15VDC (containing the power regulator circuit). The input impedance: 50 ohms. RF interface: standard SMA female. Size:5 x 3cm/1.97 x 1.18inch.
Reviews
Find Best Price at Amazon"Haven't given it any sort of workout, but it looks nice and I can see the demodulated signals on my oscilloscope."