This is originally a booster which convert 5V input to 13.3V output.
- Transistor: BC337
- Diode: 1N4148
- Zener: 1N4743
Simulate this circuit and you will get magic simulation results, meanwhile, if you simulate this circuit using Multisim, you will get an "infinite" power source....(7.16V output) even if you switch off the input power.