This circuit makes use of a transconductance operational amplifier from the 90s. Formula for the calculation of the components is given next to the diagram.
In the figure we have the way to obtain a monostable TTL based on 74121. The circuit appears in...
With good filtration, a battery charger can be used as a power source. The filter shock can be the...
This oscillator has an output power of 20 mW. We found it in a Mullard transistor manual from...