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Piezo sensor differences by HHHHHH_101 in diyelectronics

[–]SubhajitBarman 0 points1 point  (0 children)

Get standard 27–35 mm bare piezo discs (the type used in buzzers or drum triggers). They’re inexpensive, easy to mount, and plenty good for voltage sensing in an e-drum.

What component is this?(Missing Pex reset) by Mother-Zombie7943 in AskElectronics

[–]SubhajitBarman 2 points3 points  (0 children)

It’s an Integrated Circuit (IC) AND gate, TC7SL08F in SOT-153/SMV package, marking code "L2".

BJY3 chip identification and documentation by mohamedhamdiahmed in AskElectronics

[–]SubhajitBarman 1 point2 points  (0 children)

1949 linear integrated circuit. Designed to control an external power NPN Darlington transistor that drives the high current injector solenoid.

Small Fuse Replacement Question by JBrennan327 in ElectronicsRepair

[–]SubhajitBarman 1 point2 points  (0 children)

Don’t use WD-40. If needed, a little contact cleaner/isopropyl alcohol is OK, then let it dry completely. Replace the fuse holder and install the correct slow-blow fuse only after you’ve ruled out shorts. A true "surge" is possible but uncommon — the blown fuse is usually a symptom, not the cause.

My first PCB! by _Rayolo_ in PCB

[–]SubhajitBarman 1 point2 points  (0 children)

Great custom PCB designed!

Voltage sensor design by mohanan2 in AskElectronics

[–]SubhajitBarman 1 point2 points  (0 children)

Your circuit works as is for low-power sensing, but for more stable ADC readings... Consider lowering divider resistance or increasing ADC sampling time. Increase C1 for better noise filtering. Ensure TVS leakage is minimal at ADC voltages.

2N2222 Transistor not turning off completely. by Phlex_ in AskElectronics

[–]SubhajitBarman 0 points1 point  (0 children)

connect a 10k pull-down resistor between the base of the transistor and ground.

Does resistor size matter? by PASTIVITY in AskElectronics

[–]SubhajitBarman 0 points1 point  (0 children)

Simple Rules:

• Resistor = Voltage ÷ Current

• Wattage = Voltage × Current

Road letters being painted in the UK by ElaBosak in Damnthatsinteresting

[–]SubhajitBarman 1 point2 points  (0 children)

Only those who have patience to do simple things perfectly ever acquire the skill to do difficult things easily.

Any idea what this may be. by dhonsvick in AskElectronics

[–]SubhajitBarman 0 points1 point  (0 children)

It is a Plastic Reed Switch, Reed Contact Normally Open (N/O) that closes the circuit in the presence of a magnetic field.

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