PUT LED flasher V3

The following circuit flashes a LED approximately every second when the power supply voltage is about +12V DC.
In this circuit, the LED is again connected in a different place, thereby saving the current limiting that was required in previous circuits.
The current limiting for the LED is done by R2, because this resistor is put in series with the LED when the PUT is latched into conduction.
R3 determines the ON-time of the LED.
The value of R2 was chosen for a power supply voltage of about +12V DC.
When higher power supply voltages are used, increase R2 accordingly, so the LED current is about 15mA for a high efficiency LED.