The LM136-2.5/LM236-2.5 and LM336-2.5 integrated circuits are precision 2.5V shunt regulator diodes. These monolithic IC voltage references operate as a low-temperature-coefficient 2.5V zener with 0.2 dynamic impedance. A third terminal on the LM136-2.5 allows the reference voltage and temperature coefficient to be trimmed easily.
This pair is my favorite when driving small solenoids or motors. SOT-32 and 12 Watts on Heatsink. This means any small solenoid, relay or DC motor can be controlled with this. I would use it upto 24V DC and max of 1A for applications of full on and full off. The pair is complementary NPN and PNP and well matched, this makes it suitable for the push-pull final stages of mini amps or small motor drivers.
The 1N4148 is a standard silicon switching signal diode. Nominal values are Switching Speed 4 ns. Reverse Voltage 100V, Forward Current 200mA, 25nA leakage current. Room Temperature Specs. Package DO-35, DO-204AH. 500mW Power Dissipation. IN914 equivalent..
Datasheets of 1N4148 High Speed Diode.
[pdfjs-viewer url="https://dapj.org/wp-content/uploads/2024/10/1n4148.pdf" attachment_id="35134" viewer_width=100% viewer_height=800px fullscreen=true download=true print=true]
Since 1978, Wenzel Associates has defined the state-of-the-art in ultra-low phase noise while providing system manufactures with the highest quality, cost effective frequency components and instruments.
Wenzel Associates introduced the Blue Tops system building blocks to offer oscillator users well-characterized, low noise components, which improved the time to market for new frequency based systems.
An Omega engineering Catalog with many Dilbert Comic Strips Integrated.
Not only is the catalog informative the dilbert pages make this book good reading.
IRFP460 – Fast switching, ruggedized device design, low on-resistance and cost-effectiveness. The TO-247 package is preferred for commercial-industrial applications . 500V 20A device. Dynamic dV/dt Rating, Repetitive Avalanche Rated, Isolated Central Mounting Hole, Fast Switching, Ease of Paralleling, Simple Drive Requirements.
Description from Harris Manual
This Insulation Testing Reference by AEMC Instruments is a Must Read for all Instrumentation and Electrical Professionals. Even Students and Enthusiasts who want to learn more about Insulation, can find this informative. The other reference articles also are of Learning Interest. Insulation Testing is a Part of Power, Energy, Green, Solar Systems as well. It is an Important part of Product Safety.
CA3140 and CA3130 are originally RCA part numbers( i feel). They are amazing close to ideal opamps, the input offset has to be trimmed. I used to use it when high input impedance is required. 1.5T ohm 10pA is the specs. A Electrometer can be made with just one opamp.
CA3130 has the additional Merit of swinging to the rails, if you are on a +/- 12V supply, the output will be +/-12V. This is a feature required in control applications.nn
CA3140 -4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output
Supplementary to EMI/RFI/EMC Immunity of an Equipment. Many Installations are subject to Highly Disruptive Electrical Environment not just EMI. Depending on the budget and the situation a solution has to be found. Sometimes a CVT or an Isolation Transformer can do a lot of good.
Converting all Energy inputs to battery energy and having a Isolated Synthetic Sine Supply may be an expensive but good solution. Either way the devices that face the harsh environment have to be over rated along with these protections. - delabs design Notes
Careful study of CMOS characteristics show that CMOS devices used in a system design can be used for linear building blocks as well as digital blocks.Utilization of these new devices will decrease package count and reduce supply requirements. The circuit designer now can do both digital and linear designs with the same type of device.
