Apparatus and methods for regulating gate delays of synchronous and
asynchronous digital circuits. Thermally-sensitive circuits include,
generally, temperature sensitive voltage sources outputting a voltage
signal indicative of the temperature of the digital circuit, where the
voltage signal reflects non-linear temperature sensitivity above a
predetermined threshold temperature, and delay mechanisms receiving said
temperature sensitive voltage signal(s) as input and being configured to
automatically continuously modulate the speed of signal propagation
through the circuit in response to said voltage signal, thereby causing
circuit elements within the circuits to switch less frequently and
consequently causing the circuit elements to generate less heat with
increasing circuit temperature.