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Hierarchical block is unconnected 3. The voltage at C4 is 0. Dec 242: I am confused, whether the transistor needs more base voltage My concern is whether 8v is enough to switch this transistor and Z1 voltage of 0. My guess is that the 8V at B-E is not a DC voltage but an alternating signal that is confusing your meter. How can the power consumption for computing be reduced for energy harvesting?

Battery Charger using LM 0. Battery charger using pic using pwm I get 8v at base. A small test i have conducted is I get the instant output when i manual switch the transformer by keeping the bulb between collector and emitter. I have replaced C4 which didn’t help. PNP transistor not working 2. Collector to Emitter voltage is v. There is no feedback voltage and secondary output. Turn on power triac – proposed circuit analysis 0.


Last edited by jayaramc; 1st July at Maybe you need a new transistor. Check also for a bad solder joint on the emitter to R4 connection path.

What is the function of TR1 in this circuit 3. Does this make any difference here. I can see the max voltage is 9v for this transistor. Measuring air gap of a magnetic core for home-wound inductors and flyback transformer 7. I am worried why the transistor is not switching although it has a base voltage of 8v. Regarding the transdormer being faulty – it’s rare for them to fail but shorted turns in any winding will prevent the circuit oscillating whilst not significantly changing DC conditions.

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I will check reducing R7 value whether it helps Any analysis from you experts will be helpful. Synthesized tuning, Part 2: Dec 248: Digital multimeter appears to have measured voltages lower than expected. Input port and input output port declaration in top module 2.

Before I tried R9 with 10 ohms also I got only this from the shop when I asked for S. I am sure the problem is in primary side and i don’t see any bad solder joints.

You may try and change the D1 diode, C1 capacitor…. The transistor is not switching even in 8v means, does it needs krc voltage. AF modulator in Transmitter what is the A?

I tried adding K in parallel across R7 with no effect. Base to Emitter voltage is 8. Also I have tried removing Z2 and Base gets 11v. How reliable is it? Equating complex number interms of the other 6.


Datasheets history of inquiries : Datasheets for Electronic Components and Semiconductors

With all these actions tried already I am not sure what else remains: Also did you check for any short-circuit in the secondary section? CMOS Technology file 1. How do you get an MCU design to market quickly? I am sure on the pins and checked as well Part and Inventory Search. Try 130001 modify R7 down to K, this time using a good transistor the light bulb must be turned on Heat sinks, Part 2: The new transistor also doesn’t switch.

It’s better to share your questions and answers on Edaboard so we can all benefit from each others experiences. Choosing IC with EN signal datasheeet. A DVM will not tell you the truth when measuring in the presence of an AC component and this circuit is a single transistor oscillator so the signal will not be pure DC.

Also is it normal that the voltage across the signalling diode Z1 as 0.