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Usual Sapphire Interocitor
Controls
Properties
Availability & Pricing
| Distributor | Qty 1 | |
|---|---|---|
| Arrow | $0.79–$1.21 | |
| Digi-Key | $1.57–$2.55 | |
| LCSC | $2.01–$2.08 | |
| Mouser | $1.67 | |
| Verical | $0.67–$9.27 | |
Assets
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mahil
copilot
- Timers and Oscillator:
- IC1: NE555P
- VR1: PDB181-K420K-103B
- C1 and C2
- Diodes:
- D1: 1N4007
- D2: 1N4007
Connections for the 555 Timer in Astable Mode:-
Power Supply:
- Connect IC1:8 (VCC) to the positive power rail (supply voltage, typically +9V).
- Connect IC1:1 (GND) to the negative power rail (ground).
-
Timing Components:
- Connect VR1:CCW to IC1:7 (DIS) and to one end of C2.
- Connect C2 to GND.
- Connect IC1:6 (THR) to IC1:7 (DIS).
- Connect IC1:5 (CV) to GND via a small capacitor, typically 10nF.
-
Pulse-width Modulation:
- Connect VR1:CW to the positive power rail.
- Connect VR1:WIPER to IC1:6 (THR).
- Connect D1:Anode to IC1:6 (THR).
- Connect D1:Cathode to IC1:2 (TR).
- Connect D2:Anode to IC1:2 (TR).
- Connect D2:Cathode to IC1:7 (DIS).
- Connect IC1:2 (TR) to the junction of VR1:WIPER and the Anode of D1.
-
Output:
- Connect IC1:3 (Q) to the PWM output.
Summary of Connections:mahil
mahil
Image