Podcasts about opamps

The TOP 5 Jellybean comparators, plus a bonus and special snowflake choice. 00:00 – Jellybean Comparators 01:20 – Traps for young players using Opamps as comparators 04:43 – Is the old School LM311 still THE jellybean? https://www.ti.com/lit/ds/symlink/lm311-n.pdf 11:17 – TS391 Small single comparator https://www.mouser.com/datasheet/2/389/cd00001660-1795546.pdf 16:33 – LM393/LM2903 Dual comparator https://www.ti.com/lit/ds/symlink/lm393a.pdf 21:27 – LM339/LM2901 Quad comparator ...

Is there a better chopper/auto-zero amplifier than the MAX4239 used in the uCurrent? A look at the exciting world of parametric searching for components. Follow along as Dave looks for a new state-of-the-art opamp. Success not guaranteed!

MEP EP#225: Clipping and Clamping OpAmpsStephen DC heaters continued Tested the new values Last episode was shooting for ~250mW of dissipation in the regulator and transistor Measuring closer to 350mW Quiescent current and some balancing and tolerance Opamp clamping circuit A useful voltage clamping circuit with independent upper and lower thresholds Pros Much more accurate than the simple clipping circuits Hard turn on characteristics Can be overdriven without much issues Not terribly expensive Downsides 3 or 4 opamps needed Not particularly fast - starts to show issues past 20k and is pretty bad at 30k Small overshoot that is frequency dependent Does not work with opamps that have input protection diodes Parker Brewery Updates! Installed Tubing Pumps Pots Waiting on Stainless mesh basket What is left Design and build the grain crane Mount electrical box Finish wiring Paint and sealant Electrical Box Might have put the power input in the wrong spot! Need to finish the wiring.. Need to order more wire I think... R.F.O. Rules of thumb - Are they obsolete? Next week we have Al Williams on from Hack a Day If anyone has any questions for him let us know in slack!

Podcast Notes Last week Stephen and Parker asked listeners for names for the two conference rooms so far these are the suggestions. Tony the DIYer - MacMinor and MacMajor. Some platforms the c struct that holds the mac address specifies it as a pair of major (32 bit) and minor (16 bit) values. Justin Knight - pagoda for the smaller room since it doesnt have chairs. Hertz and Mega Hertz Vcc and Vdd Power and Ground SDA and SCL TX and RX Conferance McConferance Face Look for an online poll soon for the name! Parker was testing a customers LED board earlier this week. Fed up with blinding himself with the bright LEDs he decided to wear a welding mask. See Figure 1. The helmet can be found on amazon. Parker took a welding class at TXRX Hackerspace. Stephen has been working more on "The Greatest Resistor....in the world.". Stats below! See Figure 2. Power: 0.0625w 40,000 resistors = 2.5kW V = SQRT(P*R) = 5000V @ 0.5A Voltage: each resistor is 50v so 200 in series = 10kV Temp Coef: 100ppm Eagle File Size: 3.888 Mb which is 40,485 lines Space Echo just needs calibration. Anyone know how to generate these specs? Feed sin wave of -50 dBm into input (See Pg 16-18 of service manual). Space Echo RE-201 Service Manual Possible Thermal Camera to look at the heat up during powering? What kind of resolution would that camera need to be? Razer's Project Valerie is a radical three-screen laptop that unfolds with robot arms. Tri screen laptop Mechanical Keyboard Tesla turns on the Gigafactory. More than 2,900 people are already working at the 4.9 million square-foot facility, and more than 4,000 jobs. No info about the batteries yet. The Other Kind of Bypass capacitors. Article not about normal bypass / decoupling caps but about feedback caps in circuits. Other words bypass caps for feedback circuits. Opamps have these internal feedback capacitors to reduce the high-frequency gain of the op-amp, in order to allow the amplifier to have a predictable transfer function that is stable at unity-gain. Special thanks to whixr over at Tymkrs for the intro and outro!