bornach| Quantity | Component name | |
| 2 | × | 5mm red LED |
| 1 | × | signal diode |
| 1 | × | LM358 op amp |
| 2 | × | 10K ohm resistor |
| 1 | × | 4K7 ohn resistor |
Cadmium-free Light Sensitive Sawtooth Oscillator
What happens when you replace the resistor and capacitor of an RC sawtooth oscillator with a reverse biased LED?