Adjusting RV1 Potentiometer

yassenrashad202

yassenrashad202

CHANGE RV1 PY POTENTIAL METER

flux

I’ll update RV1’s potentiometer setting in-place if it’s just a value/property change; first I’ll inspect RV1 to confirm its current part and editable properties, then apply the change and verify it.

flux

RV1 is already a through-hole Bourns 3386P vertical potentiometer/trimmer, wired for base bias. I don’t need to replace it because replacing would risk breaking its existing connections; I’m just verifying the current state now.

flux

RV1 is already a 10k through-hole potentiometer/trimmer: Bourns 3386P-1-103LF. I verified it is wired correctly for base bias: pin 3 to 12V, pins 1 and 2 tied to the BASE_BIAS node, so no replacement was needed.
Use panel-mount pot
Find smaller trimmer
Check RV1 footprint
Verify RV1 design
Sign up to send
Q1 B - R2 P1
RV1 2 - C2 P1
Q1 E - R3 P1
RV1 2 - C2 P1
Q1 C - R4 P2
J2 1 - C2 P2
Q1 E - R3 P1
Q1 B - R2 P1
J1 1 - C4 P1
GND
Q1
RV1
Resistance
10000 ohms
C1
Capacitance
1000 uF
C2
Capacitance
100 uF
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Common Emitter Audio Amplifier PCB

Common Emitter Audio Amplifier PCB thumbnail
12 V 2N2222 common-emitter audio amplifier PCB based on the uploaded reference diagram, with AC input coupling, adjustable base bias, emitter bypass, collector load, output coupling capacitor, and speaker connector.

Properties

USB-C 5V sink, default USB-C current advertisement; design power path compatible with 0.5A to 3A sources without blindly drawing 3A

Digital T/RH sensor over I2C, ultra-low-power Wi-Fi/BLE MCU module, USB-C VBUS reverse/OVP/UVLO/OCP protection, protected 5V to 3.3V regulation

Consumer use target; select RoHS/REACH capable components where possible

5

V

Consumer environmental sensing

2.4GHz 802.11 b/g/n Wi-Fi plus BLE 5.x

Pricing & Availability

Distributor

Qty 1

Arrow

$0.83–$3.80

Digi-Key

$1.39–$5.37

HQonline

$1.67

LCSC

$0.86–$2.44

Mouser

$1.56–$4.27

TME

$1.35–$2.04

Verical

$0.72–$7.22

Controls