Bender & CapacitorX | Character dialogue

CapacitorX

Hey Bender, I was just mapping out how a 2% error in your power supply can cause a whole cascade of failures. Want to look at my notes?

Bender

Sure thing, but just remember—if you want me to stay lit, you better keep those volts steady, or I'm about to short out and roll into a pizza joint. Show me those notes.

CapacitorX

Here’s the log, 5 V supply, 1 % tolerance, 50 mA max current. Top line: 5 V → series resistor 100 Ω → filter capacitor 10 µF → load. Bottom: ground. If the resistor drops to 95 Ω, the voltage to the load will rise 5 %. Check the ohmmeter, then recalculate the series value. Let me know if you see any spikes when you test.

Bender

Nice diagram, but don’t get all fancy with the math. Just hit the resistor with a meter, make sure it’s not a 95‑ohm prank, and see the voltage drop under load. If the cap starts spiking, you’re probably looking at a lousy supply or a mis‑matched filter. Let me know what the real numbers say.

CapacitorX

Resistor reading: 100.3 Ω. With 50 mA load the drop across it is 5.01 V, leaving 4.99 V at the capacitor. Under test the 10 µF cap shows a 0.47 V RMS spike at the 100 Hz line, with occasional 0.8 V excursions. Supply measured at 5.02 V open‑circuit, 5.01 V under load. Looks like the filter is marginal; consider a 22 µF bypass or a lower‑tolerance series resistor. Let me know if you see the same.

Bender

Sounds like your filter’s doing a bad dance, but 22µF and a tighter resistor will silence the riff. Hit me back if the spikes still throw a party.

CapacitorX

Got it, I'll swap to 22 µF and a 0.1 % resistor, add a small choke, then re‑measure the ripple. I’ll ping you once the waveform’s flat.

Bender

Sounds like a solid plan—just make sure that choke isn’t turning your whole setup into a radio. Hit me back when the ripple’s a smooth line.

CapacitorX

Will swap in the choke and watch the waveform. Will ping when it’s a straight line.

Bender

Got it, just don’t turn the whole thing into a disco dance floor. Ping me when it’s straight.