Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic 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.

Register Log in

ADS Transient Simulation

Mahdihm

Newbie
Joined
May 20, 2020
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
19
Hi everyone.

After wishing everyone good health and success, why my Mono_Stable Circuit is not work?
( I used 1n4148 diode and 2n3905 BJT Transistor )
Can anyone help me?

Best Regards.
 

Attachments


BradtheRad

Super Moderator
Staff member
Joined
Apr 1, 2011
Messages
13,474
Helped
2,667
Reputation
5,328
Reaction score
2,573
Trophy points
1,393
Location
Minneapolis, Minnesota, USA
Activity points
100,750
Your incoming transition needs to last long enough, and be strong enough, to shut Off Q2, and turn On Q1 so it conducts. Then current is drawn through C2, to start the timing sequence.

Try different values for C1. Because too small a value conveys a weak pulse. (1 pF is a tiny value.)
Also try different places to connect the activating pulse. Also try a falling transition as well as a rising transition.
 

Mahdihm

Newbie
Joined
May 20, 2020
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
19
Your incoming transition needs to last long enough, and be strong enough, to shut Off Q2, and turn On Q1 so it conducts. Then current is drawn through C2, to start the timing sequence.

Try different values for C1. Because too small a value conveys a weak pulse. (1 pF is a tiny value.)
Also try different places to connect the activating pulse. Also try a falling transition as well as a rising transition.
Thank you so much. ?
 

Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top