Welcome Back
Login to TotalAV™
Simulating complex analog/digital hybrid controllers like the TL494 can sometimes result in slow execution or initialization errors in LTspice. Oscillator Fails to Start
For , the internal flip-flop divides the frequency by two for each output stage:
Sawtooth oscillator on CT pin (pin 7)
: Programmable via an external resistor ( RTcap R sub cap T ) and capacitor ( CTcap C sub cap T
For advanced users: create a simplified model using voltage-controlled switches, a sawtooth generator (using a BV source with V=idt(1/Ct*V(osc_enable)) ), and comparators. This is educational but time-consuming. tl494 ltspice
Since you requested a "good paper," I have structured this response as a technical application note. It covers the operating theory of the TL494, a guide to modeling it in LTspice, and a practical design example.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Since you requested a "good paper," I have
values for a specific frequency, or if you would like an example schematic for a topology. Share public link
This modification adds an explicit node between the AND gate output and the collector, resolving compatibility issues with LTspice24’s stricter netlist parser. This link or copies made by others cannot be deleted
We’re confident you’ll love TotalAV™, but if you decide it’s not for you, we offer a full refund policy for your peace of mind.
You can request a refund within 30 days of starting or renewing an annual or biannual subscription, or within 14 days of starting or renewing a quarterly or monthly plan. Refunds are only issued upon request and require termination of your subscription. Simply cancelling your subscription (i.e., disabling auto-renewal) will not end your service or automatically trigger a refund.
Your satisfaction is our top priority, and we’re confident you’ll enjoy:
Click here for full details on our Refund and Cancellation Policy, including how to request a refund.
Login to TotalAV™