Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Generating a variable duty cycle

Status
Not open for further replies.

always84

Member level 1
Joined
Feb 24, 2010
Messages
39
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Location
italy
Activity points
1,567
anyone can suggest, how can I project a variabile duty cycle generatore using SPice?
 

... variabile duty cycle generatore using SPice?

Vpulse node1 node0 PULSE ( Vlow Vhigh Tdelay Trise Tfall 'Tperiod*duty_cycle' Tperiod )
Set or define all the parameters above. At least define Tperiod and duty_cycle as parameters:
.PARAM duty_cycle=0.5
... then SWEEP this parameter.
 

Thanks guys for yours replays, probably my question was generic too. My problem is to realize a custom circuit that can generate a square wave form with variable duty cycle and fixed period.
 

The simplest method is to use a ramp generator followed by a comparator with a variable reference. The ramp generator can be implemented as a current charging a capacitor. The reference can be a resistive divider where one of the resistors is a pot.
 
Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top