Could some electronics guru please help ? I have two identical(same resistor, capacitor values) implementations of an astable multivibrator. I am using the 2N3055 and each transistor drives a coil each of a bifilar coil, whose common terminal is connected to a 12 Volt 2A(max) DC power supply. The coils is air core.
The problem is that one implementation works as designed, the other does not. To check if the oscillator is working, a pickup coil is placed in the vicinity and the output of this pickup coil is monitored via an oscilloscope.
I have observed that the base voltage on one of the two transistors is getting 10 V pulses, while the the voltage on the other transistor base is 0.2 V. I have un-soldered and checked the resistors, but they are fine. I have replaced the two capacitors, with two new identical ones but no luck.
Any hints/suggestions would be of immense help. Thanks in advance.