Beginners

[SOLVED] Interfacing with RS485/422? port behind an optocoupler

[Solved] IRF3205 has positive temp coefficient, but conducts better as it warms

[Solved] Issues with IR range from Arduino circuit

[SOLVED] LED Driver replacement with dimmer

[Solved] Li-Ion battery pack charger

[SOLVED] Light Bulb Fuse in a Tube Tester.

[SOLVED] Linear regulators still work if input voltage is too low, correct?

[Solved] LM358 pin2 connect

[SOLVED] Looking for a supplier for 1.27mm Pin Headers - Pics in post

[solved] Looking for an off-the-shelf electronic "counter" to count rotations

[SOLVED] Low Cost 12v to 5v DC to DC switching reg alternatives to LM7805

[Solved] LTSpice sim for toggle power switch is taking too long

[SOLVED] MOSFET gate voltage higher than voltage at drain/source. Safe?

[SOLVED] Multiple TTP223 problem

[SOLVED] NE555 as a tone generator for Morse code practice

[SOLVED] NE555 spikes on output, why?

[SOLVED] Need a simple passive circuit to resist changes in voltage

[Solved] Need help debugging my first PCB project

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[Solved] Need help on home lighting and possibly on life choice

[Solved] Non-inverting Op-Amp configuration not working

[SOLVED] OLED with SSD130X Driver and the different voltage levels

[Solved] Optomos Relay Neg Voltage.

[Solved] Oscilliscope, how to measure the time of a pulse from a pic 16f88.

[SOLVED] P-Channel mosfet voltage loss between D-S

[SOLVED] PC fan speed control with transistor and pot

[Solved] Problem charging 10F caps

[Solved] Purely Inductive Load on Transmission Line [Smith Chart]

[solved] Question about audio attenuation calculations in decibels & linear %.

[solved] recycling devices : capacitors discharge

[Solved] Repair: replacing heatsinked high power TO-220 with D2PAK?

[SOLVED] Request for advice on circuit-design of multimeter: Peaktech 3360

[SOLVED] Run home web site off this ESP32 board?

[SOLVED] RX & TX are confusing :(

[Solved] Schematic from datasheet, works with TL431-A but not with KA431LZ

[SOLVED] Simple short circuit protection suggestions need

[SOLVED] simulating multiple times the same circuit yelds different results

[solved] sn74lvc1g3157 analog switchs keep burning. Any hint ?

[SOLVED] Struggling to work out a crossover switch equivalent in logic

[SOLVED] Testing AS6C4008 SRAM in a TL866 II ?

[SOLVED] Troubleshooting a TRS-80 switch mode power supply.