this is the circuit of JDM programmer.
I'm trying to understand how Q2 works here.coz only base of Q2 get a voltage and emitter or collector is not connected to power supply,
there is a description about this circuit,but I cant understand that description.
here is the circuit
**broken link removed**
and this is the description
**broken link removed**
I'm trying to understand how Q2 works here.coz only base of Q2 get a voltage and emitter or collector is not connected to power supply,
there is a description about this circuit,but I cant understand that description.
here is the circuit
**broken link removed**
and this is the description
**broken link removed**