how can i make a tuned circuit using TTL (transistor transistor logic)?

Answer 1

I've often used 4011 chips for low frequency oscillators to drive stepper motors, etc.

At the link below, you'll see how a 4011 can be used as a "tuned" circuit. The oscillator is adjustable using the pot (R) that sits between the two gates and ground.

http://www.elecfree.com/electronic/cmos-logic-clock-oscillator-by-ic-4011/

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Answer 2

http://www.fairchildsemi.com/an/AN/AN-118.pdf

Near the bottom is a circuit for a crystal tunes oscillator (in addition to the other tuned circuits).

There is also the 74123 One-shot multivibrator circuit that may be tuned with an RC combination.
http://www.datasheet4u.com/html/7/4/1/74123_FairchildSemiconductor.pdf.html

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Answer 3

even nonetheless i did no longer get the whole question, do no longer forget approximately approximately your RC(resistor/capacitor) time tables!! there are 5 steps, from 0.0 -.637-.707, and so on. additionally, discover out if the set off is on the severe or low element, or on the replace thereof.