Pulse generator using 4066 IC

Using this electronic circuit diagram can be made a very simple pulse generator, using a 4066 circuit.
The pulse generator allows adjustment states "high" and "low" of output signal.
Times states "L" and "H" of output signal is adjusted with P1, P2 respectively. The values given in the scheme, during the "L" can be directed between 136 us and 3.75 ms, and during the "H'' between 15 us and 330 us. Other times for the two conditions can be obtained by changing of C2 and C3.
The circuit consumes a current of about 8 mA at a supply voltage of 10 V.